Improper Certificate Validation The advisory has been revoked - it doesn't affect any version of package apt (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1204-APT-622918
- published5 Dec 2017
- disclosed5 Dec 2017
Introduced: 5 Dec 2017
CVE-2016-1252 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:12.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream apt package and not the apt package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-1252
- https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1647467
- https://www.debian.org/security/2016/dsa-3733
- https://security-tracker.debian.org/tracker/CVE-2016-1252
- https://www.exploit-db.com/exploits/40916/
- http://packetstormsecurity.com/files/140145/apt-Repository-Signing-Bypass.html
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1020
- http://www.ubuntu.com/usn/USN-3156-1