CVE-2011-3634

methods/https.cc en apt anterior a 0.8.11 acepta conexiones cuando el nombre de host del certificado falla la validación y Verify-Host está habilitado, lo que permite a atacantes man-in-the-middle obtener credenciales de repositorios a través de vectores no especificados.

It was discovered that APT incorrectly handled the Verify-Host configuration option. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to steal repository credentials. This issue only affected Ubuntu 10.04 LTS and 10.10. USN-1215-1 fixed a vulnerability in APT by disabling the apt-key net-update option. This update re-enables the option with corrected verification. It was discovered that the apt-key utility incorrectly verified GPG keys when downloaded via the net-update option. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to install altered packages. Various other issues were also addressed.