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USN-1097-1: Tomcat vulnerabilities

29 March 2011

An attacker could send crafted input to Tomcat and cause it to crash or read and write arbitrary files.




It was discovered that the Tomcat SecurityManager did not properly restrict
the working directory. An attacker could use this flaw to read or write
files outside of the intended working directory. (CVE-2010-3718)

It was discovered that Tomcat did not properly escape certain parameters in
the Manager application which could result in browsers becoming vulnerable
to cross-site scripting attacks when processing the output. With cross-site
scripting vulnerabilities, if a user were tricked into viewing server
output during a crafted server request, a remote attacker could exploit
this to modify the contents, or steal confidential data (such as
passwords), within the same domain. (CVE-2011-0013)

It was discovered that Tomcat incorrectly enforced the maxHttpHeaderSize
limit in certain configurations. A remote attacker could use this flaw to
cause Tomcat to consume all available memory, resulting in a denial of
service. (CVE-2011-0534)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 9.10
Ubuntu 10.10
Ubuntu 10.04

In general, a standard system update will make all the necessary changes.