Skip to content
Fencer Vulns
high 7.5

CVE-2024-7885 json

Undertow: improper state management in proxy protocol parsing causes information leakage

published 2024-08-21 2 y ago modified 2026-11-04 4 d ago also GHSA-9623-mqmm-5rcf , EUVD-2024-2542

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven io.undertow:undertow-core 2.2.36.Final, 2.3.17.Final
  • Red Hat Red Hat JBoss Enterprise Application Platform 2.2.33.SP2-redhat-00001
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 0:1.7.2-19.Final_redhat_00020.1.el7eap, 0:1.7.2-20.Final_redhat_00021.1.el7eap, 0:1.11.0-1.redhat_00001.1.el7eap, 0:2.0.41-5.SP6_redhat_00001.1.el7eap, 0:2.0.41-6.SP7_redhat_00001.1.el7eap, 0:2.4.11-1.Final_redhat_00001.1.el7eap, 0:2.10.4-3.redhat_00008.1.el7eap, 0:2.10.4-4.redhat_00008.1.el7eap, 0:2.10.4-6.redhat_00008.1.el7eap, 0:4.1.63-6.Final_redhat_00004.1.el7eap, 0:7.3.15-5.GA_redhat_00003.1.el7eap, 0:7.3.16-3.GA_redhat_00003.1.el7eap
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 0:2.2.33-2.SP2_redhat_00001.1.el8eap, 0:7.4.18-1.GA_redhat_00003.1.el8eap
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 0:2.2.33-2.SP2_redhat_00001.1.el9eap, 0:7.4.18-1.GA_redhat_00003.1.el9eap
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 0:2.2.33-2.SP2_redhat_00001.1.el7eap, 0:7.4.18-1.GA_redhat_00003.1.el7eap
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.11.9-2.redhat_00001.1.el8eap, 0:2.3.14-2.SP2_redhat_00001.1.el8eap, 0:8.0.3-13.GA_redhat_00007.1.el8eap, 0:800.3.1-2.GA_redhat_00002.1.el8eap
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.11.9-2.redhat_00001.1.el9eap, 0:2.3.14-2.SP2_redhat_00001.1.el9eap, 0:8.0.3-13.GA_redhat_00007.1.el9eap, 0:800.3.1-2.GA_redhat_00002.1.el9eap
  • undertow Debian 14 2.3.18-1

debian advisories DEBIAN-CVE-2024-7885

  • eap7-wildfly jboss enterprise application platform 7.4 7.4.18-1.GA_redhat_00003.1.el7eap
  • eap7-wildfly jboss enterprise application platform 7.4 7.4.18-1.GA_redhat_00003.1.el8eap
  • eap7-wildfly jboss enterprise application platform 7.4 7.4.18-1.GA_redhat_00003.1.el9eap
  • eap7-undertow jboss enterprise application platform 7.4 2.2.33-2.SP2_redhat_00001.1.el7eap
  • eap7-undertow jboss enterprise application platform 7.4 2.2.33-2.SP2_redhat_00001.1.el8eap
  • eap7-undertow jboss enterprise application platform 7.4 2.2.33-2.SP2_redhat_00001.1.el9eap
  • eap7-wildfly-modules jboss enterprise application platform 7.4 7.4.18-1.GA_redhat_00003.1.el7eap
  • eap7-wildfly-modules jboss enterprise application platform 7.4 7.4.18-1.GA_redhat_00003.1.el8eap

red hat advisories RHSA-2026:0743RHSA-2025:16667RHSA-2024:7736RHSA-2024:7441

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-7885 updated cvss 7.5

undertow: Improper State Management in Proxy Protocol parsing causes information leakage

  • Red Hat build of Apache Camel for Spring Boot 3 undertow undertow Red Hat Build of Keycloak undertow undertow
    affected: no fix available
  • Red Hat Data Grid 8 undertow undertow Red Hat Fuse 7 undertow undertow Red Hat Integration Camel K 1 undertow undertow
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Data Grid 7 undertow undertow Red Hat Process Automation 7 undertow undertow
    affected: no fix planned “Out of support scope”
  • Red Hat Single Sign-On 7 undertow undertow
    affected: no fix available
  • Red Hat HawtIO 4.0.0 for Red Hat build of Apache Camel 4
    fixed: vendor fix RHSA-2024:11023
  • Red Hat build of Apache Camel 3.20.7 for Spring Boot
    fixed: vendor fix RHSA-2024:6883
  • Red Hat build of Apache Camel 4.4.2 for Spring Boot
    fixed: vendor fix RHSA-2024:6508
  • Red Hat JBoss EAP 7.4 for RHEL 7 Server eap7-wildfly 7.4.18-1.GA_redhat_00003.1.el7eap, eap7-undertow 2.2.33-2.SP2_redhat_00001.1.el7eap, eap7-wildfly-modules 7.4.18-1.GA_redhat_00003.1.el7eap, eap7-wildfly-javadocs 7.4.18-1.GA_redhat_00003.1.el7eap, eap7-wildfly-java-jdk8 7.4.18-1.GA_redhat_00003.1.el7eap, eap7-wildfly-java-jdk11 7.4.18-1.GA_redhat_00003.1.el7eap Red Hat JBoss EAP 7.4 for RHEL 8 eap7-wildfly 7.4.18-1.GA_redhat_00003.1.el8eap, eap7-undertow 2.2.33-2.SP2_redhat_00001.1.el8eap, eap7-wildfly-modules 7.4.18-1.GA_redhat_00003.1.el8eap, eap7-wildfly-javadocs 7.4.18-1.GA_redhat_00003.1.el8eap, eap7-wildfly-java-jdk8 7.4.18-1.GA_redhat_00003.1.el8eap, eap7-wildfly-java-jdk11 7.4.18-1.GA_redhat_00003.1.el8eap, +1 more Red Hat JBoss EAP 7.4 for RHEL 9 eap7-wildfly 7.4.18-1.GA_redhat_00003.1.el9eap, eap7-undertow 2.2.33-2.SP2_redhat_00001.1.el9eap, eap7-wildfly-modules 7.4.18-1.GA_redhat_00003.1.el9eap, eap7-wildfly-javadocs 7.4.18-1.GA_redhat_00003.1.el9eap, eap7-wildfly-java-jdk8 7.4.18-1.GA_redhat_00003.1.el9eap, eap7-wildfly-java-jdk11 7.4.18-1.GA_redhat_00003.1.el9eap, +1 more
    fixed: vendor fix RHSA-2024:7736
show 6 more
  • Red Hat JBoss EAP 8.0 for RHEL 8 eap8-wildfly 8.0.3-13.GA_redhat_00007.1.el8eap, eap8-undertow 2.3.14-2.SP2_redhat_00001.1.el8eap, eap8-amazon-ion-java 1.11.9-2.redhat_00001.1.el8eap, eap8-wildfly-modules 8.0.3-13.GA_redhat_00007.1.el8eap, eap8-wildfly-java-jdk11 8.0.3-13.GA_redhat_00007.1.el8eap, eap8-wildfly-java-jdk17 8.0.3-13.GA_redhat_00007.1.el8eap, +3 more Red Hat JBoss EAP 8.0 for RHEL 9 eap8-wildfly 8.0.3-13.GA_redhat_00007.1.el9eap, eap8-undertow 2.3.14-2.SP2_redhat_00001.1.el9eap, eap8-amazon-ion-java 1.11.9-2.redhat_00001.1.el9eap, eap8-wildfly-modules 8.0.3-13.GA_redhat_00007.1.el9eap, eap8-wildfly-java-jdk11 8.0.3-13.GA_redhat_00007.1.el9eap, eap8-wildfly-java-jdk17 8.0.3-13.GA_redhat_00007.1.el9eap, +3 more
    fixed: vendor fix RHSA-2024:7441
  • Red Hat JBoss Enterprise Application Platform undertow-core 2.2.33.SP2-redhat-00001
    fixed: vendor fix RHSA-2024:8080
  • Red Hat JBoss Enterprise Application Platform 7
    fixed: vendor fix RHSA-2024:7735
  • Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 Server eap7-wildfly 7.3.15-5.GA_redhat_00003.1.el7eap, eap7-wildfly 7.3.16-3.GA_redhat_00003.1.el7eap, eap7-netty 4.1.63-6.Final_redhat_00004.1.el7eap, eap7-jackson-core 2.10.4-4.redhat_00008.1.el7eap, eap7-undertow 2.0.41-5.SP6_redhat_00001.1.el7eap, eap7-undertow 2.0.41-6.SP7_redhat_00001.1.el7eap, +68 more
    fixed: vendor fix RHSA-2025:16667
  • Red Hat JBoss Enterprise Application Platform 8
    fixed: vendor fix RHSA-2024:7442
  • Red Hat build of Quarkus quarkus-undertow Red Hat JBoss Enterprise Application Platform pom.xml, c3 0.6.0, c3 0.7.1, d3 5.9.2, fs 2.1.2, ip 2.0.0, +1561 more Red Hat JBoss Enterprise Application Platform 7 undertow-core Red Hat JBoss Enterprise Application Platform Expansion Pack undertow-core
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

2.64% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven io.undertow:undertow-core
<2.2.36.Final
>=2.3.0.Alpha1, <2.3.17.Final
2.2.36.Final
2.3.17.Final

Affected products

  • Red Hat HawtIO 4.0.0 for Red Hat build of Apache Camel 4
  • Red Hat Red Hat build of Apache Camel 3.20.7 for Spring Boot
  • Red Hat Red Hat build of Apache Camel 4.4.2 for Spring Boot
  • Red Hat Red Hat JBoss Enterprise Application Platform
  • Red Hat Red Hat JBoss Enterprise Application Platform 7
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7
  • Red Hat Red Hat JBoss Enterprise Application Platform 8
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9
  • Red Hat Red Hat build of Apache Camel for Spring Boot 3
  • Red Hat Red Hat Build of Keycloak
  • Red Hat Red Hat build of Quarkus
  • Red Hat Red Hat Data Grid 8
  • Red Hat Red Hat Fuse 7
  • Red Hat Red Hat Integration Camel K 1
  • Red Hat Red Hat JBoss Data Grid 7
  • Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat Red Hat Process Automation 7
  • Red Hat Red Hat Single Sign-On 7

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.