Vulnerability CVE-2011-4407
Published: 2014-05-13   Modified: 2014-05-14

Description:
ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate when downloading PPA GPG key fingerprints, which allows man-in-the-middle (MITM) attackers to spoof GPG keys for a package repository.

Type:

CWE-20

 (Improper Input Validation)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Canonical -> Software-properties 
Canonical -> Ubuntu linux 

 References:
https://bugs.launchpad.net/ubuntu/%2Bsource/software-properties/%2Bbug/915210
http://www.ubuntu.com/usn/USN-1352-1
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