CVE-2024-7885: Undertow core Undertow Vulnerable To Race Condition Vulnerability

HIGH
Advisory Identifier: GHSA-9623-mqmm-5rcf
Share
CVSS 7.5
CWE-362
Published
Advisory Summary

CVE-2024-7885 is a HIGH (CVSS 7.5) undertow vulnerable to race condition vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting Undertow core libraries in the Maven ecosystem. The issue involves undertow vulnerable to race condition. Remediation is available by upgrading affected packages to version 2.2.36.Final, 2.3.17.Final.

CVE-2024-7885 at a Glance

CVE Identifier CVE-2024-7885
GHSA Identifier GHSA-9623-mqmm-5rcf
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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-2024-7885

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: 2.2.36.Final 
<dependency>
    <groupId>io.undertow</groupId>
    <artifactId>undertow-core</artifactId>
    <version>2.2.36.Final</version>
</dependency>
io.undertow:undertow-core fixed: 2.3.17.Final 
<dependency>
    <groupId>io.undertow</groupId>
    <artifactId>undertow-core</artifactId>
    <version>2.3.17.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-2024-7885, 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 2.2.36.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-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), where the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. 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 the ProxyProtocolReadListener reuses the same StringBuilder instance across multiple requests. This issue occurs when the parseProxyProtocolV1 method processes multiple requests on the same HTTP connection. As a result, different requests may share the same StringBuilder instance, potentially leading to information leakage between requests or responses. In some cases, a value from a previous request or response may be erroneously reused, which could lead to unintended data exposure. This issue primarily results in errors and connection termination but creates a risk of data leakage in multi-request environments.

CVE-2024-7885 Affected Undertow core Versions

2 component(s)
Fixed Versions:
2.2.36.Final2.3.17.Final
Product / Package Ecosystem Affected Versions Fixed Version
io.undertow:undertow-core
maven/io.undertow/undertow-core
Maven
< 2.2.36.Final
2.2.36.Final
io.undertow:undertow-core
maven/io.undertow/undertow-core
Maven
≥ 2.3.0.Alpha1
< 2.3.17.Final
2.3.17.Final

References

NVD — CVE-2024-7885 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-7885
Security Fix Commit FIX COMMIT
https://github.com/undertow-io/undertow/commit/ce5182c37376982ef0abee34fce0d8c0aab0fab8
Security Fix Commit FIX COMMIT
https://github.com/undertow-io/undertow/commit/80c125e09068ac52ed0a9acde266ef12f8ed7ae1
Undertow core Security Information SECURITY
https://security.netapp.com/advisory/ntap-20241011-0004
Undertow core Source Repository REPOSITORY
https://github.com/undertow-io/undertow/blob/182e4ca1543c52f438b0244c930dca3d8b6e68e3/core/src/main/java/io/undertow/server/protocol/proxy/ProxyProtocolReadListener.java
Undertow core Source Repository REPOSITORY
https://github.com/undertow-io/undertow
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2305290
Undertow core Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2024-7885
access.redhat.com/errata/rhsa-2026:07... WEB
https://access.redhat.com/errata/RHSA-2026:0743
access.redhat.com/errata/rhsa-2025:16... WEB
https://access.redhat.com/errata/RHSA-2025:16667
access.redhat.com/errata/rhsa-2024:80... WEB
https://access.redhat.com/errata/RHSA-2024:8080
access.redhat.com/errata/rhsa-2024:77... WEB
https://access.redhat.com/errata/RHSA-2024:7736
access.redhat.com/errata/rhsa-2024:77... WEB
https://access.redhat.com/errata/RHSA-2024:7735
access.redhat.com/errata/rhsa-2024:74... WEB
https://access.redhat.com/errata/RHSA-2024:7442
access.redhat.com/errata/rhsa-2024:74... WEB
https://access.redhat.com/errata/RHSA-2024:7441
access.redhat.com/errata/rhsa-2024:68... WEB
https://access.redhat.com/errata/RHSA-2024:6883
access.redhat.com/errata/rhsa-2024:65... WEB
https://access.redhat.com/errata/RHSA-2024:6508
access.redhat.com/errata/rhsa-2024:11... WEB
https://access.redhat.com/errata/RHSA-2024:11023

Frequently Asked Questions

What is CVE-2024-7885?
CVE-2024-7885 is a security vulnerability in Undertow core involving Undertow vulnerable to Race Condition under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition').
Which Undertow core versions are affected?
Affected versions include releases prior to 2.2.36.Final, 2.3.17.Final across affected packages: io.undertow:undertow-core.
What version fixes CVE-2024-7885?
Upgrading to 2.2.36.Final, 2.3.17.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 2.2.36.Final, 2.3.17.Final. Upgrade your dependency to 2.2.36.Final, 2.3.17.Final or later.
What is the CVSS score of CVE-2024-7885?
CVE-2024-7885 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-2024-7885?
CVE-2024-7885 is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.).
How can I check Maven dependencies for CVE-2024-7885?
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-9623-mqmm-5rcf",
  "modified" : "2026-01-19T06:30:27Z",
  "published" : "2024-08-21T15:30:54Z",
  "aliases" : [ "CVE-2024-7885" ],
  "summary" : "Undertow vulnerable to Race Condition",
  "details" : "A vulnerability was found in Undertow where the ProxyProtocolReadListener reuses the same StringBuilder instance across multiple requests. This issue occurs when the parseProxyProtocolV1 method processes multiple requests on the same HTTP connection. As a result, different requests may share the same StringBuilder instance, potentially leading to information leakage between requests or responses. In some cases, a value from a previous request or response may be erroneously reused, which could lead to unintended data exposure. This issue primarily results in errors and connection termination but creates a risk of data leakage in multi-request environments.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.undertow:undertow-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.2.36.Final"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.undertow:undertow-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.3.0.Alpha1"
      }, {
        "fixed" : "2.3.17.Final"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-7885"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/undertow-io/undertow/commit/ce5182c37376982ef0abee34fce0d8c0aab0fab8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/undertow-io/undertow/commit/80c125e09068ac52ed0a9acde266ef12f8ed7ae1"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20241011-0004"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/undertow-io/undertow/blob/182e4ca1543c52f438b0244c930dca3d8b6e68e3/core/src/main/java/io/undertow/server/protocol/proxy/ProxyProtocolReadListener.java"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/undertow-io/undertow"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2305290"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2024-7885"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:0743"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2025:16667"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:8080"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:7736"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:7735"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:7442"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:7441"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:6883"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:6508"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:11023"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-362" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-08-21T20:08:37Z",
    "nvd_published_at" : "2024-08-21T14:15:09Z"
  }
}