What’s Vulnerable › Vulnerabilities
CVE-2016-1252
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 7.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2017-12-05 · updated 2026-06-17
- Weakness: CWE-295
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.
Affected products
- Canonical Ubuntu Linux: 14.04, 16.04, 16.10
- Debian Advanced Package Tool: before 1.0.9.8.4 — fixed in 1.0.9.8.4
How to fix
Upgrade to a fixed version: Debian Advanced Package Tool 1.0.9.8.4. Check the vendor advisory for mitigations.
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/
- 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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