CVE-2022-2048: Http2 server Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-wgmr-mf83-7x4j
Share
CVSS 7.5
CWE-400 CWE-410
Published
Advisory Summary

CVE-2022-2048 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Http2 server libraries in the Maven ecosystem. The issue involves jetty vulnerable to invalid http/2 requests that can lead to denial of service. Remediation is available by upgrading affected packages to version 9.4.47, 10.0.10, 11.0.10.

CVE-2022-2048 at a Glance

CVE Identifier CVE-2022-2048
GHSA Identifier GHSA-wgmr-mf83-7x4j
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Http2 server
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:H).

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 High (A:H)

How to Fix CVE-2022-2048

To remediate this vulnerability, upgrade all affected Http2 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.http2:http2-server fixed: 9.4.47 
<dependency>
    <groupId>org.eclipse.jetty.http2</groupId>
    <artifactId>http2-server</artifactId>
    <version>9.4.47</version>
</dependency>
org.eclipse.jetty.http2:http2-server fixed: 10.0.10 
<dependency>
    <groupId>org.eclipse.jetty.http2</groupId>
    <artifactId>http2-server</artifactId>
    <version>10.0.10</version>
</dependency>
org.eclipse.jetty.http2:http2-server fixed: 11.0.10 
<dependency>
    <groupId>org.eclipse.jetty.http2</groupId>
    <artifactId>http2-server</artifactId>
    <version>11.0.10</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.http2

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-2048, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.eclipse.jetty.http2

Analyze the terminal output to locate any version of Http2 server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.4.47), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.eclipse.jetty.http2 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 Http2 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

### Description Invalid HTTP/2 requests (for example, invalid URIs) are incorrectly handled by writing a blocking error response directly from the selector thread. If the client manages to exhaust the HTTP/2 flow control window, or TCP congest the connection, the selector thread will be blocked trying to write the error response. If this is repeated for all the selector threads, the server becomes unresponsive, causing the denial of service. ### Impact A malicious client may render the server unresponsive. ### Patches The fix is available in Jetty versions 9.4.47. 10.0.10, 11.0.10. ### Workarounds No workaround available within Jetty itself. One possible workaround is to filter the requests before sending them to Jetty (for example in a proxy) ### For more information If you have any questions or comments about this advisory: * Email us at security@webtide.com.

CVE-2022-2048 Affected Http2 server Versions

3 component(s)
Fixed Versions:
9.4.4710.0.1011.0.10
Product / Package Ecosystem Affected Versions Fixed Version
org.eclipse.jetty.http2:http2-server
maven/org.eclipse.jetty.http2/http2-server
Maven
< 9.4.47
9.4.47
org.eclipse.jetty.http2:http2-server
maven/org.eclipse.jetty.http2/http2-server
Maven
≥ 10.0.0
< 10.0.10
10.0.10
org.eclipse.jetty.http2:http2-server
maven/org.eclipse.jetty.http2/http2-server
Maven
≥ 11.0.0
< 11.0.10
11.0.10

References

GitHub Advisory / Wiki ADVISORY
https://github.com/eclipse/jetty.project/security/advisories/GHSA-wgmr-mf83-7x4j
NVD — CVE-2022-2048 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-2048
Http2 server Source Repository REPOSITORY
https://github.com/eclipse/jetty.project
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2022/08/msg00011.html
Http2 server Security Information SECURITY
https://security.netapp.com/advisory/ntap-20220901-0006
Http2 server Security Information SECURITY
https://www.debian.org/security/2022/dsa-5198
Http2 server Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/09/09/2

Frequently Asked Questions

What is CVE-2022-2048?
CVE-2022-2048 is a security vulnerability in Http2 server involving Jetty vulnerable to Invalid HTTP/2 requests that can lead to denial of service under CWE-400: Uncontrolled Resource Consumption.
Which Http2 server versions are affected?
Affected versions include releases prior to 9.4.47, 10.0.10, 11.0.10 across affected packages: org.eclipse.jetty.http2:http2-server.
What version fixes CVE-2022-2048?
Upgrading to 9.4.47, 10.0.10, 11.0.10 (or the latest patched release for your respective branch) resolves the vulnerability.
Is http2-server affected?
Yes, org.eclipse.jetty.http2:http2-server is affected in releases prior to 9.4.47, 10.0.10, 11.0.10. Upgrade your dependency to 9.4.47, 10.0.10, 11.0.10 or later.
What is the CVSS score of CVE-2022-2048?
CVE-2022-2048 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2022-2048?
CVE-2022-2048 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-2022-2048?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.eclipse.jetty.http2'. 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-wgmr-mf83-7x4j",
  "modified" : "2022-07-19T19:42:51Z",
  "published" : "2022-07-07T20:55:40Z",
  "aliases" : [ "CVE-2022-2048" ],
  "summary" : "Jetty vulnerable to Invalid HTTP/2 requests that can lead to denial of service",
  "details" : "### Description\nInvalid HTTP/2 requests (for example, invalid URIs) are incorrectly handled by writing a blocking error response directly from the selector thread.\nIf the client manages to exhaust the HTTP/2 flow control window, or TCP congest the connection, the selector thread will be blocked trying to write the error response.\nIf this is repeated for all the selector threads, the server becomes unresponsive, causing the denial of service.\n\n### Impact\nA malicious client may render the server unresponsive.\n\n### Patches\nThe fix is available in Jetty versions 9.4.47. 10.0.10, 11.0.10.\n\n### Workarounds\nNo workaround available within Jetty itself.\nOne possible workaround is to filter the requests before sending them to Jetty (for example in a proxy)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at security@webtide.com.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.eclipse.jetty.http2:http2-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "9.4.47"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.eclipse.jetty.http2:http2-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "10.0.0"
      }, {
        "fixed" : "10.0.10"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.eclipse.jetty.http2:http2-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0"
      }, {
        "fixed" : "11.0.10"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/eclipse/jetty.project/security/advisories/GHSA-wgmr-mf83-7x4j"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-2048"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/eclipse/jetty.project"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2022/08/msg00011.html"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20220901-0006"
  }, {
    "type" : "WEB",
    "url" : "https://www.debian.org/security/2022/dsa-5198"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2022/09/09/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400", "CWE-410" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-07-07T20:55:40Z",
    "nvd_published_at" : "2022-07-07T21:15:00Z"
  }
}