Tomcat: Multiple vulnerabilities

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.0385
      Multiple vulnerabilities have been identified in Apache Tomcat
                               7 April 2011

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        AusCERT Security Bulletin Summary
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Product:           Tomcat
Publisher:         Apache
Operating System:  UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
                   Unauthorised Access      -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-1475 CVE-2011-1183 CVE-2011-1088

Original Bulletin: 
   http://tomcat.apache.org/security-7.html
   http://tomcat.apache.org/security.html

Comment: This bulletin contains two (2) security advisories.
         
         It is expected that vendors who support Apache Tomcat will be
         providing updates soon.

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CVE-2011-1183 Apache Tomcat security constraint bypass

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
- - Tomcat 7.0.11
- - Earlier versions are not affected

Description:
A regression in the fix for CVE-2011-1088 meant that security
constraints were ignored when no login configuration was present in the
web.xml and the web application was marked as meta-data complete.

Mitigation:
Users of affected versions should apply one of the following mitigations:
- - Upgrade to a Tomcat 7.0.12 or later
- - Ensure a login configuration is defined in web.xml

Credit:
This issue was identified by the Apache Tomcat security team.

References:
http://tomcat.apache.org/security.html
http://tomcat.apache.org/security-7.html

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CVE-2011-1475 Apache Tomcat information disclosure

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
- - Tomcat 7.0.0 to 7.0.11
- - Earlier versions are not affected

Description:
Changes introduced to the HTTP BIO connector to support Servlet 3.0
asynchronous requests did not fully account for HTTP pipelining. As a
result, when using HTTP pipelining a range of unexpected behaviours
occurred including the mixing up of responses between requests. While
the mix-up in responses was only observed between requests from the same
user, a mix-up of responses for requests from different users may also
be possible.

Mitigation:
Users of affected versions should apply one of the following mitigations:
- - Upgrade to a Tomcat 7.0.12 or later
- - Switch to the NIO or APR/native HTTP connectors that do not exhibit
this issue

Credit:
This issue was identified by Brad Piles and reported via the public ASF
Bugzilla issue tracking system.
The Apache Tomcat security team requests that security vulnerability
reports are made privately to security@tomcat.apache.org in the first
instance.

References:
http://tomcat.apache.org/security.html
http://tomcat.apache.org/security-7.html

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