CVE-2019-12401: Solr core Apache Solr Vulnerable To XML Vulnerability
HIGHCVE-2019-12401 is a HIGH (CVSS 7.5) apache solr vulnerable to xml vulnerability (CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')) affecting Solr core libraries in the Maven ecosystem. The issue involves apache solr vulnerable to xml bomb. Remediation is available by upgrading affected packages to version 5.0.0.
CVE-2019-12401 at a Glance
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).
How to Fix CVE-2019-12401
To remediate this vulnerability, upgrade all affected Solr core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.apache.solr</groupId>
<artifactId>solr-core</artifactId>
<version>5.0.0</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.apache.solrHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2019-12401, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.apache.solrAnalyze the terminal output to locate any version of Solr core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.0), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.apache.solr 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-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion'), where the product uses xml documents and allows their structure to be defined with a document type definition (dtd), but it does not properly control the number of recursive definitions of entities. In Solr core, 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
CVE-2019-12401 Affected Solr core Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.apache.solr:solr-core
|
Maven |
< 5.0.0
|
5.0.0
|
References
Frequently Asked Questions
What is CVE-2019-12401?
Which Solr core versions are affected?
What version fixes CVE-2019-12401?
Is solr-core affected?
What is the CVSS score of CVE-2019-12401?
What CWE is associated with CVE-2019-12401?
How can I check Maven dependencies for CVE-2019-12401?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-jq2w-w7v2-69q5",
"modified" : "2023-03-06T20:47:32Z",
"published" : "2022-05-24T22:00:29Z",
"aliases" : [ "CVE-2019-12401" ],
"summary" : "Apache Solr vulnerable to XML Bomb",
"details" : "Solr versions prior to 5.0.0 are vulnerable to an XML resource consumption attack (a.k.a. Lol Bomb) via it?s update handler.?By leveraging XML DOCTYPE and ENTITY type elements, the attacker can create a pattern that will expand when the server parses the XML causing OOMs.",
"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.apache.solr:solr-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "5.0.0"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-12401"
}, {
"type" : "WEB",
"url" : "https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2019-12401-XML%20Bomb-Apache%20Solr"
}, {
"type" : "WEB",
"url" : "https://issues.apache.org/jira/browse/SOLR-13750"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/048ae6e4f84a88e8856f766320b48ad91f9fca2c6f621aa2c40088fe@%3Cdev.lucene.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/0ec231c5ed8d242890e21806d25fdd47f80cc47cac278d2fc1c9c579@%3Cdev.lucene.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/1c92300643f48f13bc59b15e3f886ba62bae1798c7d4c2e5c1ece09b@%3Cannounce.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/521d10a19bfb590f86dff41820ccfb11e92281f233a12c882650931e@%3Cdev.lucene.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/60a924662ead9aeea74e8ea128d9ca935f8de925aa71b15ab2787d6a@%3Csolr-user.lucene.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/7ab5e95a1a0b4f35ffe53f1eb0cb74b4348b49d41b72ac155b843fa2@%3Cgeneral.lucene.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/db8eaca456d03c00a66cbe37548978318d424b9997e3fd7f5c65dffe@%3Cdev.lucene.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://security.netapp.com/advisory/ntap-20190926-0002"
}, {
"type" : "WEB",
"url" : "http://mail-archives.us.apache.org/mod_mbox/www-announce/201909.mbox/%3CCAECwjAXU4%3DkAo5DeUJw7Kvk67sgCmajAN7LGZQNjbjZ8gv%3DBdw%40mail.gmail.com%3E"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2019/09/10/1"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-776" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2022-11-08T13:23:13Z",
"nvd_published_at" : "2019-09-10T15:15:00Z"
}
}