CVE-2020-27223: Jetty server Denial of Service Vulnerability

Q: What is CVE-2020-27223?

CVE-2020-27223 is a security vulnerability in Jetty server involving DOS vulnerability for Quoted Quality CSV headers under CWE-400: Uncontrolled Resource Consumption.

Q: Which Jetty server versions are affected?

Affected versions include releases prior to 9.4.37, 10.0.1, 11.0.1 across affected packages: org.eclipse.jetty:jetty-server.

Q: What version fixes CVE-2020-27223?

Upgrading to 9.4.37, 10.0.1, 11.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is jetty-server affected?

Yes, org.eclipse.jetty:jetty-server is affected in releases prior to 9.4.37, 10.0.1, 11.0.1. Upgrade your dependency to 9.4.37, 10.0.1, 11.0.1 or later.

Q: What is the CVSS score of CVE-2020-27223?

CVE-2020-27223 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Q: What CWE is associated with CVE-2020-27223?

CVE-2020-27223 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).

Q: How can I check Maven dependencies for CVE-2020-27223?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.eclipse.jetty'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

MODERATE

Advisory Identifier: GHSA-m394-8rww-3jr7

CVSS 5.3

CWE-400

Published 2021-03-10

Advisory Summary

CVE-2020-27223 is a MODERATE (CVSS 5.3) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Jetty server libraries in the Maven ecosystem. The issue involves dos vulnerability for quoted quality csv headers. Remediation is available by upgrading affected packages to version 9.4.37, 10.0.1, 11.0.1.

CVE-2020-27223 at a Glance

CVE Identifier CVE-2020-27223

GHSA Identifier GHSA-m394-8rww-3jr7

Severity MODERATE

CVSS v3.1 Base Score 5.3

CWE Classification CWE-400: Uncontrolled Resource Consumption

Affected Product Jetty server

Package Ecosystem Maven

Published Date 2021-03-10

Last Updated 2021-10-21

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required None (PR:N)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality None (C:N)

Integrity None (I:N)

Availability Low (A:L)

How to Fix CVE-2020-27223

To remediate this vulnerability, upgrade all affected Jetty server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.eclipse.jetty:jetty-server fixed: 9.4.37

<dependency>
    <groupId>org.eclipse.jetty</groupId>
    <artifactId>jetty-server</artifactId>
    <version>9.4.37</version>
</dependency>

org.eclipse.jetty:jetty-server fixed: 10.0.1

<dependency>
    <groupId>org.eclipse.jetty</groupId>
    <artifactId>jetty-server</artifactId>
    <version>10.0.1</version>
</dependency>

org.eclipse.jetty:jetty-server fixed: 11.0.1

<dependency>
    <groupId>org.eclipse.jetty</groupId>
    <artifactId>jetty-server</artifactId>
    <version>11.0.1</version>
</dependency>

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

mvn dependency:tree -Dincludes=org.eclipse.jetty

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-27223, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.eclipse.jetty

Analyze the terminal output to locate any version of Jetty server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.4.37), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.eclipse.jetty command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Jetty server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact When Jetty handles a request containing request headers with a large number of “quality” (i.e. q) parameters (such as what are seen on the `Accept`, `Accept-Encoding`, and `Accept-Language` request headers), the server may enter a denial of service (DoS) state due to high CPU usage while sorting the list of values based on their quality values. A single request can easily consume minutes of CPU time before it is even dispatched to the application. The only features within Jetty that can trigger this behavior are: - Default Error Handling - the `Accept` request header with the `QuotedQualityCSV` is used to determine what kind of content to send back to the client (html, text, json, xml, etc) - `StatisticsServlet` - uses the `Accept` request header with the `QuotedQualityCSV` to determine what kind of content to send back to the client (xml, json, text, html, etc) - `HttpServletRequest.getLocale()` - uses the `Accept-Language` request header with the `QuotedQualityCSV` to determine which “preferred” language is returned on this call. - `HttpservletRequest.getLocales()` - is similar to the above, but returns an ordered list of locales based on the quality values on the `Accept-Language` request header. - `DefaultServlet` - uses the `Accept-Encoding` request header with the `QuotedQualityCSV` to determine which kind of pre-compressed content should be sent back for static content (content that is not matched against a url-pattern in your web app) ### Versions `QuotedQualityCSV` was introduced to Jetty 9.3.9.v20160517 and the bug that introduced the vulnerability was in 9.4.6.v20170531. Currently, known vulnerable versions include: - 9.4.6.v20170531 thru to 9.4.36.v20210114 - 10.0.0 - 11.0.0 ### Workarounds Quality ordered values are used infrequently by jetty so they can be avoided by: * Do not use the default error page/handler. * Do not deploy the `StatisticsServlet` exposed to the network * Do not call `getLocale` API * Do not enable precompressed static content in the `DefaultServlet` ### Patches All patches are available for download from the Eclipse Jetty website at [https://www.eclipse.org/jetty/download.php](https://www.eclipse.org/jetty/download.php) - 9.4.37.v20210219 and greater - 10.0.1 and greater - 11.0.1 and greater

CVE-2020-27223 Affected Jetty server Versions

3 component(s)

Fixed Versions:

9.4.3710.0.111.0.1

Product / Package	Ecosystem	Affected Versions	Fixed Version
org.eclipse.jetty:jetty-server maven/org.eclipse.jetty/jetty-server	Maven	≥ 9.4.6 < 9.4.37	9.4.37
org.eclipse.jetty:jetty-server maven/org.eclipse.jetty/jetty-server	Maven	≥ 10.0.0 < 10.0.1 All 1 versions 10.0.0	10.0.1
org.eclipse.jetty:jetty-server maven/org.eclipse.jetty/jetty-server	Maven	≥ 11.0.0 < 11.0.1 All 1 versions 11.0.0	11.0.1

References

GitHub Advisory / Wiki ADVISORY

https://github.com/eclipse/jetty.project/security/advisories/GHSA-m394-8rww-3jr7

NVD — CVE-2020-27223 NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-27223

lists.apache.org/thread.html/rd666e1... WEB

https://lists.apache.org/thread.html/rd666e187ebea2fda8624683ab51e2a5ad2108f762d21bf1a383d7502@%3Creviews.spark.apache.org%3E

lists.apache.org/thread.html/rc721fe... WEB

https://lists.apache.org/thread.html/rc721fe2910533bffb6bd4d69ea8ff4f36066d260dbcd2d14e041614a@%3Cissues.spark.apache.org%3E

lists.apache.org/thread.html/rc052fd... WEB

https://lists.apache.org/thread.html/rc052fd4e9e9c01bead74c0b5680355ea5dc3b72d46f253cb65d03e43@%3Ccommits.druid.apache.org%3E

lists.apache.org/thread.html/rb79b62... WEB

https://lists.apache.org/thread.html/rb79b62ac3085e05656e41865f5a7efcbdc7dcd7843abed9c5fe0fef8@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/raa6d60... WEB

https://lists.apache.org/thread.html/raa6d60b00b67c0550672b4f506f0df75b323dcd25cf574e91e2f2dff@%3Cissues.zookeeper.apache.org%3E

lists.apache.org/thread.html/ra47a26... WEB

https://lists.apache.org/thread.html/ra47a26c008487b0a739a368c846e168de06c3cd118d31ecedafa679a@%3Cdev.kafka.apache.org%3E

lists.apache.org/thread.html/ra40a88... WEB

https://lists.apache.org/thread.html/ra40a88a2301a3da86e25b501ff4bc88124f2b816c2917d5f3497f8f0@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/ra38489... WEB

https://lists.apache.org/thread.html/ra384892bab8c03a60613a6a9d5e9cae0a2b800fd882792a55520115e@%3Ccommits.kafka.apache.org%3E

lists.apache.org/thread.html/ra2f529... WEB

https://lists.apache.org/thread.html/ra2f529da674f25a7351543544f7d621b5227c49a0745913b1194d11e@%3Creviews.spark.apache.org%3E

lists.apache.org/thread.html/r8dc1b1... WEB

https://lists.apache.org/thread.html/r8dc1b13b80d39fbf4a9d158850e15cd868f0460c2f364f13dca7050b@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/r8b1963... WEB

https://lists.apache.org/thread.html/r8b1963f16d6cb1230ca7ee73b6ec4f5c48f344191dbb1caabd265ee4@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/r897a6a... WEB

https://lists.apache.org/thread.html/r897a6a14d03eab09e89b809d2a650f3765065201da5bc3db9a4dd6e8@%3Ccommits.zookeeper.apache.org%3E

lists.apache.org/thread.html/r857b31... WEB

https://lists.apache.org/thread.html/r857b31ad16c6e76002bc6cca73c83358ed2595477e288286ee82c48d@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/r855b24... WEB

https://lists.apache.org/thread.html/r855b24a3bde3674256152edfc53fb8c9000f9b59db3fecbbde33b211@%3Cissues.solr.apache.org%3E

lists.apache.org/thread.html/r7ffd05... WEB

https://lists.apache.org/thread.html/r7ffd050d3bd7c90d95f4933560b5f4f15971ab9a5f5322fdce116243@%3Cdev.lucene.apache.org%3E

lists.apache.org/thread.html/r7fbdb7... WEB

https://lists.apache.org/thread.html/r7fbdb7880be1566f943d80fbbeefde2115c086eba1bef3115350a388@%3Cjira.kafka.apache.org%3E

lists.apache.org/thread.html/rd8e24a... WEB

https://lists.apache.org/thread.html/rd8e24a3e482e5984bc8c5492dc790413e4fdc1234e3debb94515796b@%3Cjira.kafka.apache.org%3E

lists.apache.org/thread.html/rdd6c47... WEB

https://lists.apache.org/thread.html/rdd6c47321db1bfe12c68a898765bf3b6f97e2afa6a501254ed4feaed@%3Cjira.kafka.apache.org%3E

lists.apache.org/thread.html/re03a4d... WEB

https://lists.apache.org/thread.html/re03a4dbc15df6f390a2f8c0a071c31c8324dbef007e59fdc2592091a@%3Ccommits.zookeeper.apache.org%3E

lists.apache.org/thread.html/re0d38c... WEB

https://lists.apache.org/thread.html/re0d38cc2b5da28f708fc89de49036f3ace052c47a1202f7d70291614@%3Cdev.kafka.apache.org%3E

lists.apache.org/thread.html/re19fa4... WEB

https://lists.apache.org/thread.html/re19fa47ec901cc3cf6d7784027198e8113f8bc2dbfd6c9d6d13f5447@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/re3bd4f... WEB

https://lists.apache.org/thread.html/re3bd4f831f9be49871cb6adb997289b5dbcd6fe4bc5cb08223254080@%3Cdev.lucene.apache.org%3E

lists.apache.org/thread.html/re43768... WEB

https://lists.apache.org/thread.html/re43768896273c0b5f1a03d7f0a9d370852074489d51825fdc0d77f0f@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/re81919... WEB

https://lists.apache.org/thread.html/re819198d4732804dc01fca8b5b144689a118ede49f6128968773595c@%3Ccommits.kafka.apache.org%3E

lists.apache.org/thread.html/reb3c6d... WEB

https://lists.apache.org/thread.html/reb3c6dc050c7ee18ea154cd94dba85d99aa6b02b84c4bb2138a4abf2@%3Creviews.spark.apache.org%3E

lists.apache.org/thread.html/reca91f... WEB

https://lists.apache.org/thread.html/reca91f217f9e1ce607ce6e19a1c0b3db82b5b1b58cf39a84d6434695@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/rf190d1... WEB

https://lists.apache.org/thread.html/rf190d1d28e1367d1664ef6bc2f71227566d7b6b39209817a5364da1f@%3Cissues.solr.apache.org%3E

lists.apache.org/thread.html/rf6c2ef... WEB

https://lists.apache.org/thread.html/rf6c2efa3137bc8c22707e550a1f9b80f74bca62b9c8a6f768f2c6b86@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/rf77f4c... WEB

https://lists.apache.org/thread.html/rf77f4c4583669f1133d58cc4f1964367e253818ed8db986bb2732f7c@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/rff630c... WEB

https://lists.apache.org/thread.html/rff630ce92a4d1bb494fc1a3f9b57a3d60819b436505bcd8c6ccc713c@%3Ccommits.kafka.apache.org%3E

Jetty server Security Information SECURITY

https://security.netapp.com/advisory/ntap-20210401-0005

Jetty server Security Information SECURITY

https://www.oracle.com/security-alerts/cpuApr2021.html

lists.apache.org/thread.html/r2c9473... WEB

https://lists.apache.org/thread.html/r2c947376491a20d1cf143bf3c21ed74113e099d806cfe4c490a45ad8@%3Creviews.spark.apache.org%3E

lists.apache.org/thread.html/r2c2c7b... WEB

https://lists.apache.org/thread.html/r2c2c7b2971360fb946bbf062c58d7245927dd1ce9150fc9987f65409@%3Cjira.kafka.apache.org%3E

lists.apache.org/thread.html/r27ad78... WEB

https://lists.apache.org/thread.html/r27ad7843d060762cc942820566eeaa9639f75371afedf8124b943283@%3Cissues.spark.apache.org%3E

lists.apache.org/thread.html/r26d919... WEB

https://lists.apache.org/thread.html/r26d9196f4d2afb9bec2784bcb6fc183aca82e4119bf41bdc613eec01@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/r1b803e... WEB

https://lists.apache.org/thread.html/r1b803e6ebdac5f670708878fb1b27cd7a0ce9d774a60e797e58cee6f@%3Cissues.nifi.apache.org%3E

lists.apache.org/thread.html/r1b7ed2... WEB

https://lists.apache.org/thread.html/r1b7ed296a865e3f1337a96ee9cd51f6d154d881a30da36020ca72a4b@%3Cjira.kafka.apache.org%3E

lists.apache.org/thread.html/r1414ab... WEB

https://lists.apache.org/thread.html/r1414ab2b3f4bb4c0e736caff6dc8d15f93f6264f0cca5c47710d7bb3@%3Creviews.spark.apache.org%3E

lists.apache.org/thread.html/r105f4e... WEB

https://lists.apache.org/thread.html/r105f4e52feb051faeb9141ef78f909aaf5129d6ed1fc52e099c79463@%3Cissues.spark.apache.org%3E

lists.apache.org/thread.html/r0e25cd... WEB

https://lists.apache.org/thread.html/r0e25cdf3722a24c53049d37396f0da8502cb4b7cdc481650dc601dbc@%3Cgitbox.activemq.apache.org%3E

lists.apache.org/thread.html/r0cdab1... WEB

https://lists.apache.org/thread.html/r0cdab13815fc419805a332278c8d27e354e78560944fc36db0bdc760@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/r0c6ece... WEB

https://lists.apache.org/thread.html/r0c6eced465950743f3041b03767a32b2e98d19731bd72277fc7ea428@%3Ccommits.zookeeper.apache.org%3E

lists.apache.org/thread.html/r0b639b... WEB

https://lists.apache.org/thread.html/r0b639bd9bfaea265022125d18acd2fc6456044b76609ec74772c9567@%3Cissues.zookeeper.apache.org%3E

lists.apache.org/thread.html/r07aedc... WEB

https://lists.apache.org/thread.html/r07aedcb1ece62969c406cb84c8f0e22cec7e42cdc272f3176e473320@%3Cusers.solr.apache.org%3E

lists.apache.org/thread.html/r068dfd... WEB

https://lists.apache.org/thread.html/r068dfd35ce2193f6af28b74ff29ab148c2b2cacb235995576f5bea78@%3Cissues.solr.apache.org%3E

Jetty server Source Repository REPOSITORY

https://github.com/eclipse/jetty.project

bugs.eclipse.org/bugs/show_bug.cgi WEB

https://bugs.eclipse.org/bugs/show_bug.cgi?id=571128

lists.apache.org/thread.html/r7f4ad5... WEB

https://lists.apache.org/thread.html/r7f4ad5eec0bce2821c308bb23cac53df5c94eb84de1c58de9b95c176@%3Ccommits.zookeeper.apache.org%3E

lists.apache.org/thread.html/r75ee2a... WEB

https://lists.apache.org/thread.html/r75ee2a529edb892ac59110cb3f6f91844a932c5034e16c8317f5668d@%3Ccommits.zookeeper.apache.org%3E

lists.apache.org/thread.html/r734f99... WEB

https://lists.apache.org/thread.html/r734f996149bb9b1796740385fcbdf3e093eb9aabedc0f20a48ea1d68@%3Cissues.zookeeper.apache.org%3E

lists.apache.org/thread.html/r601f15... WEB

https://lists.apache.org/thread.html/r601f15f3de7ae3a7bbcd780c19155075c56443c2cdc1d193c03b4182@%3Cissues.spark.apache.org%3E

lists.apache.org/thread.html/r5b7cc6... WEB

https://lists.apache.org/thread.html/r5b7cc6ac733e0b35816751cf45d152ae246a3f40e0b1e62b101c9522@%3Cdev.zookeeper.apache.org%3E

lists.apache.org/thread.html/r562a0c... WEB

https://lists.apache.org/thread.html/r562a0cbc5c8cac4d000a27b2854a8ab1b924aa9dd45f8ffbea98e5ad@%3Cjira.kafka.apache.org%3E

lists.apache.org/thread.html/r5612dc... WEB

https://lists.apache.org/thread.html/r5612dc69e1f79c421faf9764ffbc92591e2a69ea417c04cba57f49ea@%3Cuser.karaf.apache.org%3E

lists.apache.org/thread.html/r521a07... WEB

https://lists.apache.org/thread.html/r521a077885ce79c44a799118c878589e81e525cab72d368e5cfb6f61@%3Cissues.spark.apache.org%3E

lists.apache.org/thread.html/r51f897... WEB

https://lists.apache.org/thread.html/r51f8975ef47c12a46fbfd7da9efea7f08e1d307fe1dc3042514659ae@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/r4c92ea... WEB

https://lists.apache.org/thread.html/r4c92ea39167c0f7b096ae8268db496b5451d69606f0304b7c8a994c7@%3Cissues.nifi.apache.org%3E

lists.apache.org/thread.html/r4a456d... WEB

https://lists.apache.org/thread.html/r4a456d89a83752a012d88a60ff4b21def6c9f650b9e69ea9fa11c9f9@%3Cissues.spark.apache.org%3E

lists.apache.org/thread.html/r492cff... WEB

https://lists.apache.org/thread.html/r492cff8488a7f6eb96700afb5d137b719ddb80a833e77f971d2691c6@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/r463b12... WEB

https://lists.apache.org/thread.html/r463b12b27264c5e1e3c48c8c2cc5d33813d2f0d981102548fb3102fb@%3Cissues.nifi.apache.org%3E

lists.apache.org/thread.html/r409ee2... WEB

https://lists.apache.org/thread.html/r409ee2bae66bfff6aa89e6c74aff535e6248260d3afcb42bfb3b316b@%3Cnotifications.zookeeper.apache.org%3E

lists.apache.org/thread.html/r3ce0e3... WEB

https://lists.apache.org/thread.html/r3ce0e31b25ad4ee8f7c42b62cfdc72d1b586f5d6accd23f5295b6dd1@%3Cdev.kafka.apache.org%3E

lists.apache.org/thread.html/r35ab81... WEB

https://lists.apache.org/thread.html/r35ab810c0f3016b3fd3a3fa9088a2d2781b354a810780ce74d022b6c@%3Cdev.kafka.apache.org%3E

Frequently Asked Questions

What is CVE-2020-27223?

CVE-2020-27223 is a security vulnerability in Jetty server involving DOS vulnerability for Quoted Quality CSV headers under CWE-400: Uncontrolled Resource Consumption.

Which Jetty server versions are affected?

Affected versions include releases prior to 9.4.37, 10.0.1, 11.0.1 across affected packages: org.eclipse.jetty:jetty-server.

What version fixes CVE-2020-27223?

Upgrading to 9.4.37, 10.0.1, 11.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.

Is jetty-server affected?

Yes, org.eclipse.jetty:jetty-server is affected in releases prior to 9.4.37, 10.0.1, 11.0.1. Upgrade your dependency to 9.4.37, 10.0.1, 11.0.1 or later.

What is the CVSS score of CVE-2020-27223?

CVE-2020-27223 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

What CWE is associated with CVE-2020-27223?

CVE-2020-27223 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).

How can I check Maven dependencies for CVE-2020-27223?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.eclipse.jetty'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

Machine-readable OSV JSON OSV v1.5 Schema

Normalized schema output

View Raw JSON

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-m394-8rww-3jr7",
  "modified" : "2021-10-21T14:14:05Z",
  "published" : "2021-03-10T03:46:47Z",
  "aliases" : [ "CVE-2020-27223" ],
  "summary" : "DOS vulnerability for Quoted Quality CSV headers",
  "details" : "### Impact\nWhen Jetty handles a request containing request headers with a large number of “quality” (i.e. q) parameters (such as what are seen on the `Accept`, `Accept-Encoding`, and `Accept-Language` request headers), the server may enter a denial of service (DoS) state due to high CPU usage while sorting the list of values based on their quality values.  A single request can easily consume minutes of CPU time before it is even dispatched to the application.\n\nThe only features within Jetty that can trigger this behavior are:\n\n- Default Error Handling - the `Accept` request header with the `QuotedQualityCSV` is used to determine what kind of content to send back to the client (html, text, json, xml, etc)\n- `StatisticsServlet` - uses the `Accept` request header with the `QuotedQualityCSV` to determine what kind of content to send back to the client (xml, json, text, html, etc)\n- `HttpServletRequest.getLocale()` - uses the `Accept-Language` request header with the `QuotedQualityCSV` to determine which “preferred” language is returned on this call.\n- `HttpservletRequest.getLocales()` - is similar to the above, but returns an ordered list of locales based on the quality values on the `Accept-Language` request header.\n- `DefaultServlet` - uses the `Accept-Encoding` request header with the `QuotedQualityCSV` to determine which kind of pre-compressed content should be sent back for static content (content that is not matched against a url-pattern in your web app)\n\n### Versions\n`QuotedQualityCSV` was introduced to Jetty 9.3.9.v20160517 and the bug that introduced the vulnerability was in 9.4.6.v20170531. \n\nCurrently, known vulnerable versions include:\n\n- 9.4.6.v20170531 thru to 9.4.36.v20210114\n- 10.0.0\n- 11.0.0\n\n### Workarounds\n\nQuality ordered values are used infrequently by jetty so they can be avoided by:\n\n * Do not use the default error page/handler.\n * Do not deploy the `StatisticsServlet` exposed to the network\n * Do not call `getLocale` API\n * Do not enable precompressed static content in the `DefaultServlet` \n\n### Patches\n\nAll patches are available for download from the Eclipse Jetty website at [https://www.eclipse.org/jetty/download.php](https://www.eclipse.org/jetty/download.php)\n- 9.4.37.v20210219 and greater\n- 10.0.1 and greater \n- 11.0.1 and greater",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.eclipse.jetty:jetty-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.4.6"
      }, {
        "fixed" : "9.4.37"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.eclipse.jetty:jetty-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "10.0.0"
      }, {
        "fixed" : "10.0.1"
      } ]
    } ],
    "versions" : [ "10.0.0" ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.eclipse.jetty:jetty-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0"
      }, {
        "fixed" : "11.0.1"
      } ]
    } ],
    "versions" : [ "11.0.0" ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/eclipse/jetty.project/security/advisories/GHSA-m394-8rww-3jr7"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-27223"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rd666e187ebea2fda8624683ab51e2a5ad2108f762d21bf1a383d7502@%3Creviews.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rc721fe2910533bffb6bd4d69ea8ff4f36066d260dbcd2d14e041614a@%3Cissues.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rc052fd4e9e9c01bead74c0b5680355ea5dc3b72d46f253cb65d03e43@%3Ccommits.druid.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rb79b62ac3085e05656e41865f5a7efcbdc7dcd7843abed9c5fe0fef8@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/raa6d60b00b67c0550672b4f506f0df75b323dcd25cf574e91e2f2dff@%3Cissues.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/ra47a26c008487b0a739a368c846e168de06c3cd118d31ecedafa679a@%3Cdev.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/ra40a88a2301a3da86e25b501ff4bc88124f2b816c2917d5f3497f8f0@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/ra384892bab8c03a60613a6a9d5e9cae0a2b800fd882792a55520115e@%3Ccommits.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/ra2f529da674f25a7351543544f7d621b5227c49a0745913b1194d11e@%3Creviews.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r8dc1b13b80d39fbf4a9d158850e15cd868f0460c2f364f13dca7050b@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r8b1963f16d6cb1230ca7ee73b6ec4f5c48f344191dbb1caabd265ee4@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r897a6a14d03eab09e89b809d2a650f3765065201da5bc3db9a4dd6e8@%3Ccommits.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r857b31ad16c6e76002bc6cca73c83358ed2595477e288286ee82c48d@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r855b24a3bde3674256152edfc53fb8c9000f9b59db3fecbbde33b211@%3Cissues.solr.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r7ffd050d3bd7c90d95f4933560b5f4f15971ab9a5f5322fdce116243@%3Cdev.lucene.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r7fbdb7880be1566f943d80fbbeefde2115c086eba1bef3115350a388@%3Cjira.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rd8e24a3e482e5984bc8c5492dc790413e4fdc1234e3debb94515796b@%3Cjira.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rdd6c47321db1bfe12c68a898765bf3b6f97e2afa6a501254ed4feaed@%3Cjira.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/re03a4dbc15df6f390a2f8c0a071c31c8324dbef007e59fdc2592091a@%3Ccommits.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/re0d38cc2b5da28f708fc89de49036f3ace052c47a1202f7d70291614@%3Cdev.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/re19fa47ec901cc3cf6d7784027198e8113f8bc2dbfd6c9d6d13f5447@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/re3bd4f831f9be49871cb6adb997289b5dbcd6fe4bc5cb08223254080@%3Cdev.lucene.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/re43768896273c0b5f1a03d7f0a9d370852074489d51825fdc0d77f0f@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/re819198d4732804dc01fca8b5b144689a118ede49f6128968773595c@%3Ccommits.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/reb3c6dc050c7ee18ea154cd94dba85d99aa6b02b84c4bb2138a4abf2@%3Creviews.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/reca91f217f9e1ce607ce6e19a1c0b3db82b5b1b58cf39a84d6434695@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rf190d1d28e1367d1664ef6bc2f71227566d7b6b39209817a5364da1f@%3Cissues.solr.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rf6c2efa3137bc8c22707e550a1f9b80f74bca62b9c8a6f768f2c6b86@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rf77f4c4583669f1133d58cc4f1964367e253818ed8db986bb2732f7c@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rff630ce92a4d1bb494fc1a3f9b57a3d60819b436505bcd8c6ccc713c@%3Ccommits.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20210401-0005"
  }, {
    "type" : "WEB",
    "url" : "https://www.oracle.com/security-alerts/cpuApr2021.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r2c947376491a20d1cf143bf3c21ed74113e099d806cfe4c490a45ad8@%3Creviews.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r2c2c7b2971360fb946bbf062c58d7245927dd1ce9150fc9987f65409@%3Cjira.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r27ad7843d060762cc942820566eeaa9639f75371afedf8124b943283@%3Cissues.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r26d9196f4d2afb9bec2784bcb6fc183aca82e4119bf41bdc613eec01@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r1b803e6ebdac5f670708878fb1b27cd7a0ce9d774a60e797e58cee6f@%3Cissues.nifi.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r1b7ed296a865e3f1337a96ee9cd51f6d154d881a30da36020ca72a4b@%3Cjira.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r1414ab2b3f4bb4c0e736caff6dc8d15f93f6264f0cca5c47710d7bb3@%3Creviews.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r105f4e52feb051faeb9141ef78f909aaf5129d6ed1fc52e099c79463@%3Cissues.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r0e25cdf3722a24c53049d37396f0da8502cb4b7cdc481650dc601dbc@%3Cgitbox.activemq.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r0cdab13815fc419805a332278c8d27e354e78560944fc36db0bdc760@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r0c6eced465950743f3041b03767a32b2e98d19731bd72277fc7ea428@%3Ccommits.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r0b639bd9bfaea265022125d18acd2fc6456044b76609ec74772c9567@%3Cissues.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r07aedcb1ece62969c406cb84c8f0e22cec7e42cdc272f3176e473320@%3Cusers.solr.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r068dfd35ce2193f6af28b74ff29ab148c2b2cacb235995576f5bea78@%3Cissues.solr.apache.org%3E"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/eclipse/jetty.project"
  }, {
    "type" : "WEB",
    "url" : "https://bugs.eclipse.org/bugs/show_bug.cgi?id=571128"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r7f4ad5eec0bce2821c308bb23cac53df5c94eb84de1c58de9b95c176@%3Ccommits.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r75ee2a529edb892ac59110cb3f6f91844a932c5034e16c8317f5668d@%3Ccommits.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r734f996149bb9b1796740385fcbdf3e093eb9aabedc0f20a48ea1d68@%3Cissues.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r601f15f3de7ae3a7bbcd780c19155075c56443c2cdc1d193c03b4182@%3Cissues.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r5b7cc6ac733e0b35816751cf45d152ae246a3f40e0b1e62b101c9522@%3Cdev.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r562a0cbc5c8cac4d000a27b2854a8ab1b924aa9dd45f8ffbea98e5ad@%3Cjira.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r5612dc69e1f79c421faf9764ffbc92591e2a69ea417c04cba57f49ea@%3Cuser.karaf.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r521a077885ce79c44a799118c878589e81e525cab72d368e5cfb6f61@%3Cissues.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r51f8975ef47c12a46fbfd7da9efea7f08e1d307fe1dc3042514659ae@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r4c92ea39167c0f7b096ae8268db496b5451d69606f0304b7c8a994c7@%3Cissues.nifi.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r4a456d89a83752a012d88a60ff4b21def6c9f650b9e69ea9fa11c9f9@%3Cissues.spark.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r492cff8488a7f6eb96700afb5d137b719ddb80a833e77f971d2691c6@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r463b12b27264c5e1e3c48c8c2cc5d33813d2f0d981102548fb3102fb@%3Cissues.nifi.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r409ee2bae66bfff6aa89e6c74aff535e6248260d3afcb42bfb3b316b@%3Cnotifications.zookeeper.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r3ce0e31b25ad4ee8f7c42b62cfdc72d1b586f5d6accd23f5295b6dd1@%3Cdev.kafka.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r35ab810c0f3016b3fd3a3fa9088a2d2781b354a810780ce74d022b6c@%3Cdev.kafka.apache.org%3E"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-03-10T03:46:22Z",
    "nvd_published_at" : "2021-02-26T22:15:00Z"
  }
}

CVSS V3

5.3 MODERATE