Vulnerability CVE-2011-3152


Published: 2014-04-27   Modified: 2014-04-28

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.

Type:

CWE-310

(Cryptographic Issues)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.4/10
4.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Canonical -> Update-manager 
Canonical -> Ubuntu linux 

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

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