CVE ID:	CVE-2011-3152
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.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2011-3152 BugTraq ID: 50833 http://www.securityfocus.com/bid/50833 http://www.osvdb.org/77642 http://secunia.com/advisories/47024 http://www.ubuntu.com/usn/USN-1284-1 XForce ISS Database: ubuntu-update-gpg-sec-bypass(71494) https://exchange.xforce.ibmcloud.com/vulnerabilities/71494