CVE-2011-3152 Information

Description

DistUpgrade/DistUpgradeFetcherCore.py in Update Manager before 1:0.87.31.1 1:0.134.x before 1:0.134.11.1 1:0.142.x before 1:0.142.23.1 1:0.150.x before 1:0.150.5.1 and 1:0.152.x before 1:0.152.25.5 on Ubuntu 8.04 through 11.10 does not verify the GPG signature before extracting an upgrade tarball which allows man-in-the-middle attackers to (1) create or overwrite arbitrary files via a directory traversal attack using a crafted tar file or (2) bypass authentication via a crafted meta-release file.

Reference

http://secunia.com/advisories/47024 http://www.osvdb.org/77642 http://www.securityfocus.com/bid/50833 http://www.ubuntu.com/usn/USN-1284-1 https://bugs.launchpad.net/ubuntu/2Bsource/update-manager/2Bbug/881548 https://exchange.xforce.ibmcloud.com/vulnerabilities/71494