CVE-2024-6162: Undertow core Undertow's Url-encoded Request Path Information Vulnerability

HIGH
Advisory Identifier: GHSA-9442-gm4v-r222
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CVSS 7.5
CWE-400 CWE-488
Published
Advisory Summary

CVE-2024-6162 is a HIGH (CVSS 7.5) undertow's url-encoded request path information vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Undertow core libraries in the Maven ecosystem. The issue involves undertow's url-encoded request path information can be broken on ajp-listener. Remediation is available by upgrading affected packages to version 2.3.14.Final, 2.2.33.Final.

CVE-2024-6162 at a Glance

CVE Identifier CVE-2024-6162
GHSA Identifier GHSA-9442-gm4v-r222
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Undertow core
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-2024-6162

To remediate this vulnerability, upgrade all affected Undertow 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.

io.undertow:undertow-core fixed: 2.3.14.Final 
<dependency>
    <groupId>io.undertow</groupId>
    <artifactId>undertow-core</artifactId>
    <version>2.3.14.Final</version>
</dependency>
io.undertow:undertow-core fixed: 2.2.33.Final 
<dependency>
    <groupId>io.undertow</groupId>
    <artifactId>undertow-core</artifactId>
    <version>2.2.33.Final</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=io.undertow

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2024-6162, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.undertow

Analyze the terminal output to locate any version of Undertow core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.14.Final), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.undertow 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 Undertow 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

A vulnerability was found in Undertow, where URL-encoded request paths can be mishandled during concurrent requests on the AJP listener. This issue arises because the same buffer is used to decode the paths for multiple requests simultaneously, leading to incorrect path information being processed. As a result, the server may attempt to access the wrong path, causing errors such as "404 Not Found" or other application failures. This flaw can potentially lead to a denial of service, as legitimate resources become inaccessible due to the path mix-up.

CVE-2024-6162 Affected Undertow core Versions

2 component(s)
Fixed Versions:
2.3.14.Final2.2.33.Final
Product / Package Ecosystem Affected Versions Fixed Version
io.undertow:undertow-core
maven/io.undertow/undertow-core
Maven
≥ 2.3.0.Alpha1
< 2.3.14.Final
2.3.14.Final
io.undertow:undertow-core
maven/io.undertow/undertow-core
Maven
< 2.2.33.Final
2.2.33.Final

References

NVD — CVE-2024-6162 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-6162
Undertow core Source Repository REPOSITORY
https://github.com/undertow-io/undertow/pull/1612
Security Fix Commit FIX COMMIT
https://github.com/undertow-io/undertow/commit/90f202ada89b6d9883beed0f1fe10c99d470d9a8
Security Fix Commit FIX COMMIT
https://github.com/undertow-io/undertow/commit/a28ac53076e2fa532266d25e0c0b1a01d0e9d2cf
access.redhat.com/errata/rhsa-2024:11... WEB
https://access.redhat.com/errata/RHSA-2024:1194
access.redhat.com/errata/rhsa-2024:43... WEB
https://access.redhat.com/errata/RHSA-2024:4386
access.redhat.com/errata/rhsa-2024:48... WEB
https://access.redhat.com/errata/RHSA-2024:4884
Undertow core Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2024-6162
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2293069
Undertow core Source Repository REPOSITORY
https://github.com/undertow-io/undertow
Undertow core Release RELEASE
https://github.com/undertow-io/undertow/releases/tag/2.2.33.Final
Undertow core Release RELEASE
https://github.com/undertow-io/undertow/releases/tag/2.3.14.Final
issues.redhat.com/browse/jbeap-26268 WEB
https://issues.redhat.com/browse/JBEAP-26268
issues.redhat.com/browse/undertow-233... WEB
https://issues.redhat.com/browse/UNDERTOW-2334
Undertow core Security Information SECURITY
https://security.netapp.com/advisory/ntap-20241129-0009

Frequently Asked Questions

What is CVE-2024-6162?
CVE-2024-6162 is a security vulnerability in Undertow core involving Undertow's url-encoded request path information can be broken on ajp-listener under CWE-400: Uncontrolled Resource Consumption.
Which Undertow core versions are affected?
Affected versions include releases prior to 2.3.14.Final, 2.2.33.Final across affected packages: io.undertow:undertow-core.
What version fixes CVE-2024-6162?
Upgrading to 2.3.14.Final, 2.2.33.Final (or the latest patched release for your respective branch) resolves the vulnerability.
Is undertow-core affected?
Yes, io.undertow:undertow-core is affected in releases prior to 2.3.14.Final, 2.2.33.Final. Upgrade your dependency to 2.3.14.Final, 2.2.33.Final or later.
What is the CVSS score of CVE-2024-6162?
CVE-2024-6162 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-2024-6162?
CVE-2024-6162 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-2024-6162?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.undertow'. 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-9442-gm4v-r222",
  "modified" : "2026-02-27T21:38:27Z",
  "published" : "2024-06-20T15:31:19Z",
  "aliases" : [ "CVE-2024-6162" ],
  "summary" : "Undertow's url-encoded request path information can be broken on ajp-listener",
  "details" : "A vulnerability was found in Undertow, where URL-encoded request paths can be mishandled during concurrent requests on the AJP listener. This issue arises because the same buffer is used to decode the paths for multiple requests simultaneously, leading to incorrect path information being processed. As a result, the server may attempt to access the wrong path, causing errors such as \"404 Not Found\" or other application failures. This flaw can potentially lead to a denial of service, as legitimate resources become inaccessible due to the path mix-up.",
  "severity" : [ {
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    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
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      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
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  }, {
    "type" : "WEB",
    "url" : "https://github.com/undertow-io/undertow/pull/1612"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/undertow-io/undertow/commit/90f202ada89b6d9883beed0f1fe10c99d470d9a8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/undertow-io/undertow/commit/a28ac53076e2fa532266d25e0c0b1a01d0e9d2cf"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:1194"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:4386"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:4884"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2024-6162"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2293069"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/undertow-io/undertow"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/undertow-io/undertow/releases/tag/2.2.33.Final"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/undertow-io/undertow/releases/tag/2.3.14.Final"
  }, {
    "type" : "WEB",
    "url" : "https://issues.redhat.com/browse/JBEAP-26268"
  }, {
    "type" : "WEB",
    "url" : "https://issues.redhat.com/browse/UNDERTOW-2334"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20241129-0009"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400", "CWE-488" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-06-20T16:22:33Z",
    "nvd_published_at" : "2024-06-20T15:15:50Z"
  }
}