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Ubuntu Security Notice USN-1359-1
February 13, 2012
tomcat6 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Summary:
Tomcat could be made to crash or expose sensitive information if it
received specially crafted network traffic.
Software Description:
- tomcat6: Servlet and JSP engine
Details:
It was discovered that Tomcat incorrectly performed certain caching and
recycling operations. A remote attacker could use this flaw to obtain read
access to IP address and HTTP header information in certain cases. This
issue only applied to Ubuntu 11.10. (CVE-2011-3375)
It was discovered that Tomcat computed hash values for form parameters
without restricting the ability to trigger hash collisions predictably.
A remote attacker could cause a denial of service by sending many crafted
parameters. (CVE-2011-4858)
It was discovered that Tomcat incorrectly handled parameters. A remote
attacker could cause a denial of service by sending requests with a large
number of parameters and values. (CVE-2012-0022)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.10:
libtomcat6-java 6.0.32-5ubuntu1.2
Ubuntu 11.04:
libtomcat6-java 6.0.28-10ubuntu2.3
Ubuntu 10.10:
libtomcat6-java 6.0.28-2ubuntu1.6
Ubuntu 10.04 LTS:
libtomcat6-java 6.0.24-2ubuntu1.10
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1359-1
CVE-2011-3375, CVE-2011-4858, CVE-2012-0022
Package Information:
https://launchpad.net/ubuntu/+source/tomcat6/6.0.32-5ubuntu1.2
https://launchpad.net/ubuntu/+source/tomcat6/6.0.28-10ubuntu2.3
https://launchpad.net/ubuntu/+source/tomcat6/6.0.28-2ubuntu1.6
https://launchpad.net/ubuntu/+source/tomcat6/6.0.24-2ubuntu1.10
