Description
Certain AJP protocol connector implementations in Apache Tomcat 7.0.0 through 7.0.20, 6.0.0 through 6.0.33, 5.5.0 through 5.5.33, and possibly other versions allow remote attackers to spoof AJP requests, bypass authentication, and obtain sensitive information by causing the connector to interpret a request body as a new request.
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 ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | tomcat6 | 6.0.35-1+squeeze2 | DSA-2401-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | tomcat6 +8 | 6.0.24-35.el6_1 | RHSA-2011:1780 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat JBoss Web Server 1 | tomcat5 +12 | 5.5.33-27_patch_07.ep5.el5 | RHSA-2012:0680 |
| Red Hat JBoss Web Server 1 | tomcat6 +9 | 6.0.32-24_patch_07.ep5.el5 | RHSA-2012:0682 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.tomcat:tomcat | >= 7.0.0, < 7.0.21 | 7.0.21 | GHSA-c38m-v4m2-524v |
| Maven | org.apache.tomcat:tomcat | >= 6.0.0, < 6.0.34 | 6.0.34 | GHSA-c38m-v4m2-524v |
| Maven | org.apache.tomcat:tomcat | >= 5.0.0, < 5.5.34 | 5.5.34 | GHSA-c38m-v4m2-524v |
Advisories 4
- RHSA-2012:0682 Red Hat Security Advisory: tomcat6 security and bug fix update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2012:0680 Red Hat Security Advisory: tomcat5 security and bug fix update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2011:1780 Red Hat Security Advisory: tomcat6 security and bug fix update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- DSA-2401-1 tomcat6 - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- 45748 third-party-advisory
- tomcat-ajp-security-bypass(69472) vdb-entry
- MDVSA-2011:156 vendor-advisory
- DSA-2401 vendor-advisory
- 1025993 vdb-entry
- 48308 third-party-advisory
- 49094 third-party-advisory
- HPSBUX02860 vendor-advisory
- 49353 vdb-entry
- 8362 third-party-advisory
- HPSBOV02762 vendor-advisory
- oval:org.mitre.oval:def:19465 vdb-entry signature
- SSRT100627 vendor-advisory
- oval:org.mitre.oval:def:14933 vdb-entry signature
- 57126 third-party-advisory
- 20110829 [SECURITY] CVE-2011-3190 Apache Tomcat Authentication bypass and information disclosure mailing-list
- https://issues.apache.org/bugzilla/show_bug.cgi?id=51698
- HPSBST02955 vendor-advisory
- [tomcat-dev] 20190319 svn commit: r1855831 [22/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ mailing-list
- [tomcat-dev] 20190325 svn commit: r1856174 [20/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ mailing-list
- [tomcat-dev] 20200203 svn commit: r1873527 [22/30] - /tomcat/site/trunk/docs/ mailing-list
- [tomcat-dev] 20200213 svn commit: r1873980 [25/34] - /tomcat/site/trunk/docs/ mailing-list