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Medium Public exploit CVE-2013-4322 EUVD-2022-5618GHSA-wq2p-q66w-q8gp

Apache Tomcat Denial of Service vulnerability

Published Feb 26, 2014 · Updated Oct 9, 2026 · Assigned by redhat

Package: org.apache.tomcat:tomcat Ecosystem: Maven

Description

Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 7 tomcat6 6.0.45+dfsg-1~deb7u1 DSA-3530-1
Debian 7 tomcat7 7.0.28-4+deb7u1 DSA-2897-1
Debian 6.0 tomcat6 6.0.41-2+squeeze5 DLA-91-1

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 7 tomcat +9 7.0.42-5.el7_0 RHSA-2014:0686
RHEL 6 tomcat6 +8 6.0.24-64.el6_5 RHSA-2014:0429
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Red Hat JBoss Web Server 2 tomcat6 +9 6.0.37-19_patch_04.ep6.el5 RHSA-2014:0525
Red Hat JBoss Web Server 2 tomcat7 +9 7.0.40-9_patch_02.ep6.el6 RHSA-2014:0526

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 7 tomcat +9 7.0.42-5.el7_0 ELSA-2014-0686

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • LiviuPtr/CVE-2013-4322_PoC ★ 0 · Jan 18, 2026

    A simple python script PoC demonstrating the slow POST chunked transmission vulnerability.

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
Maven org.apache.tomcat:tomcat < 6.0.39 6.0.39 GHSA-wq2p-q66w-q8gp
Maven org.apache.tomcat:tomcat >= 7.0.0, < 7.0.50 7.0.50 GHSA-wq2p-q66w-q8gp
Maven org.apache.tomcat:tomcat >= 8.0.0-RC1, < 8.0.0-RC10 8.0.0-RC10 GHSA-wq2p-q66w-q8gp

Advisories 8

References