CVE-2011-3190

Impact:
Moderate
Public Date:
2011-08-20
Bugzilla:
734868: CVE-2011-3190 tomcat: authentication bypass and information disclosure

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2011-3190 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 5.8
Base Metrics AV:N/AC:M/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Server (tomcat6) RHSA-2012:0682 2012-05-21
Red Hat Enterprise Linux 6 (tomcat6) RHSA-2011:1780 2011-12-05
Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Server (tomcat5) RHSA-2012:0680 2012-05-21
Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Server (tomcat6) RHSA-2012:0682 2012-05-21
Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Server (tomcat5) RHSA-2012:0680 2012-05-21
Red Hat JBoss Web Server 1.0 RHSA-2012:0679 2012-05-21
Red Hat JBoss Web Server 1.0 RHSA-2012:0681 2012-05-21
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Mitigation

1) Upgrade to Tomcat 6.0.34.
2) Apply the appropriate patch.
3) Configure both Tomcat and the reverse proxy to use a shared secret.
   (It is "request.secret" attribute in AJP <Connector>,
   "worker.workername.secret" directive for mod_jk. The mod_proxy_ajp
   module currently does not support shared secrets).
4) Use the org.apache.jk.server.JkCoyoteHandler (BIO) AJP connector
   implementation.
   (It is automatically selected if you do not have Tomcat-Native library
   installed. It can be also selected explicitly: <Connector
   protocol="org.apache.jk.server.JkCoyoteHandler">).

Relevant patch mentioned in point 2):
http://svn.apache.org/viewvc?view=rev&rev=1162959

Last Modified

CVE description copyright © 2017, The MITRE Corporation