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.
Weakness
The product does not validate, or incorrectly validates, a certificate.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Advanced_package_tool | Debian | * | 1.0.9.8.4 (excluding) |
| Apt | Ubuntu | devel | * |
| Apt | Ubuntu | esm-infra-legacy/trusty | * |
| Apt | Ubuntu | esm-infra/xenial | * |
| Apt | Ubuntu | trusty | * |
| Apt | Ubuntu | trusty/esm | * |
| Apt | Ubuntu | vivid/stable-phone-overlay | * |
| Apt | Ubuntu | vivid/ubuntu-core | * |
| Apt | Ubuntu | xenial | * |
| Apt | Ubuntu | yakkety | * |
| Apt | Ubuntu | zesty | * |
Potential Mitigations
Related Attack Patterns
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/