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Fencer Intel
high 7.5

CVE-2011-3190 in the critical feed json

Apache Tomcat Allows Remote Attackers to Spoof AJP Requests

published 2011-08-31 15 y ago modified 2026-06-16 4 mo ago also GHSA-c38m-v4m2-524v , EUVD-2022-3486

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
15.2%
EPSS 15.2% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.apache.tomcat:tomcat 5.5.34, 6.0.34, 7.0.21
  • tomcat6 jboss enterprise web server 1 6.0.32-24_patch_07.ep5.el5
  • tomcat6 jboss enterprise web server 1 6.0.32-24_patch_07.ep5.el6
  • tomcat6-lib jboss enterprise web server 1 6.0.32-24_patch_07.ep5.el5
  • tomcat6-lib jboss enterprise web server 1 6.0.32-24_patch_07.ep5.el6
  • tomcat6-log4j jboss enterprise web server 1 6.0.32-24_patch_07.ep5.el5
  • tomcat6-log4j jboss enterprise web server 1 6.0.32-24_patch_07.ep5.el6
  • tomcat6-javadoc jboss enterprise web server 1 6.0.32-24_patch_07.ep5.el5
  • tomcat6-javadoc jboss enterprise web server 1 6.0.32-24_patch_07.ep5.el6

red hat advisories RHSA-2012:0682RHSA-2012:0680RHSA-2011:1780

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-2011-3190 updated cvss 5.8

tomcat: authentication bypass and information disclosure

  • Red Hat Enterprise Linux Server (v. 6) tomcat6 6.0.24-35.el6_1, tomcat6-lib 6.0.24-35.el6_1, tomcat6-el-2.1-api 6.0.24-35.el6_1, tomcat6-jsp-2.1-api 6.0.24-35.el6_1, tomcat6-servlet-2.5-api 6.0.24-35.el6_1 Red Hat Enterprise Linux Server Optional (v. 6) tomcat6 6.0.24-35.el6_1, tomcat6-javadoc 6.0.24-35.el6_1, tomcat6-webapps 6.0.24-35.el6_1, tomcat6-docs-webapp 6.0.24-35.el6_1, tomcat6-admin-webapps 6.0.24-35.el6_1
    fixed: vendor fix RHSA-2011:1780
  • Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Server tomcat5 5.5.33-27_patch_07.ep5.el5, tomcat6 6.0.32-24_patch_07.ep5.el5, tomcat6-lib 6.0.32-24_patch_07.ep5.el5, tomcat6-log4j 6.0.32-24_patch_07.ep5.el5, tomcat5-jasper 5.5.33-27_patch_07.ep5.el5, tomcat5-parent 5.5.33-27_patch_07.ep5.el5, +17 more Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Server tomcat5 5.5.33-28_patch_07.ep5.el6, tomcat6 6.0.32-24_patch_07.ep5.el6, tomcat6-lib 6.0.32-24_patch_07.ep5.el6, tomcat6-log4j 6.0.32-24_patch_07.ep5.el6, tomcat5-jasper 5.5.33-28_patch_07.ep5.el6, tomcat5-parent 5.5.33-28_patch_07.ep5.el6, +17 more
    fixed: vendor fix RHSA-2012:0680
  • Red Hat JBoss Web Server 1.0
    fixed: vendor fix RHSA-2012:0679
  • Red Hat Enterprise Linux 5 tomcat5
    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

Exploit prediction

15.23% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • issues.apache.org https://issues.apache.org/bugzilla/show_bug.cgi?id=51698 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected packages

ecosystem package affected fixed in
maven org.apache.tomcat:tomcat
>=7.0.0, <7.0.21
>=6.0.0, <6.0.34
>=5.0.0, <5.5.34
7.0.21
6.0.34
5.5.34

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls
  • CWE-287 Improper Authentication

References

Sources

Fencer Intel 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.