Description
APT before 1.0.9 does not "invalidate repository data" when moving from an unauthenticated to authenticated state, which allows remote attackers to have unspecified impact via crafted repository data.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | apt | 1.0.9 | — |
| Debian 13 | apt | 1.0.9 | — |
| Debian 12 | apt | 1.0.9 | — |
| Debian 7 | apt | 0.9.7.9+deb7u3 | DSA-3025-1 |
| Debian 6.0 | apt | 0.8.10.3+squeeze3 | DLA-53-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | apt | 1.0.1ubuntu2.3 | USN-2348-1 |
Advisories 3
- USN-2348-1 apt vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-53-1 apt - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3025-1 apt - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- 61286 third-party-advisory
- 61275 third-party-advisory
- USN-2348-1 vendor-advisory
- DSA-3025 vendor-advisory