Vulnerability CVE-2016-1252
Published: 2017-12-05

Description:
The apt package in Debian jessie before 1.0.9.8.4, in Debian unstable before 1.4~beta2, in Ubuntu 14.04 LTS before 1.0.1ubuntu2.17, in Ubuntu 16.04 LTS before 1.2.15ubuntu0.2, and in Ubuntu 16.10 before 1.3.2ubuntu0.1 allows man-in-the-middle attackers to bypass a repository-signing protection mechanism by leveraging improper error handling when validating InRelease file signatures.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
APT Repository Signing Bypass via Memory Allocation Failure
Google Security ...
15.12.2016

Type:

CWE-417

 (Channel and Path Errors)

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
Debian -> APT 

 References:
http://packetstormsecurity.com/files/140145/apt-Repository-Signing-Bypass.html
http://www.ubuntu.com/usn/USN-3156-1
https://bugs.chromium.org/p/project-zero/issues/detail?id=1020
https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1647467
https://www.debian.org/security/2016/dsa-3733
https://www.exploit-db.com/exploits/40916/
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