Ubuntu Security Notice USN-981-1 August 31, 2010
libwww-perl vulnerability
CVE-2010-2253
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A security issue affects the following Ubuntu releases:
Ubuntu 6.06 LTS
Ubuntu 8.04 LTS
Ubuntu 9.04
Ubuntu 9.10
Ubuntu 10.04 LTS
This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.
The problem can be corrected by upgrading your system to the
following package versions:
Ubuntu 6.06 LTS:
libwww-perl 5.803-4ubuntu0.1
Ubuntu 8.04 LTS:
libwww-perl 5.808-1ubuntu0.1
Ubuntu 9.04:
libwww-perl 5.820-1ubuntu0.1
Ubuntu 9.10:
libwww-perl 5.831-1ubuntu0.1
Ubuntu 10.04 LTS:
libwww-perl 5.834-1ubuntu0.1
In general, a standard system update will make all the necessary changes.
Details follow:
It was discovered that libwww-perl incorrectly filtered filenames suggested
by Content-Disposition headers. If a user were tricked into downloading a
file from a malicious site, a remote attacker could overwrite hidden files
in the user’s directory.