CVE-2014-0471

Jakub Wilk discovered that dpkg did not correctly parse C-style filename quoting, allowing for paths to be traversed when unpacking a source package, leading to the creation of files outside the directory of the source being unpacked (CVE-2014-0471).

Multiple vulnerabilities were discovered in dpkg that allow file modification through path traversal when unpacking source packages with especially-crafted patch files (CVE-2014-3864, CVE-2014-3865).

Directory traversal vulnerability in the unpacking functionality in dpkg before 1.15.9, 1.16.x before 1.16.13, and 1.17.x before 1.17.8 allows remote attackers to write arbitrary files via a crafted source package, related to "C-style filename quoting."

Jakub Wilk discovered that dpkg incorrectly certain paths and symlinks when unpacking source packages. If a user or an automated system were tricked into unpacking a specially crafted source package, a remote attacker could modify files outside the target unpack directory, leading to a denial of service or potentially gaining access to the system.

USN-2183-1 fixed a vulnerability in dpkg. Javier Serrano Polo discovered that the fix introduced a vulnerability in releases with an older version of the patch utility. This update fixes the problem.

Original advisory details:

Jakub Wilk discovered that dpkg incorrectly certain paths and symlinks when unpacking source packages. If a user or an automated system were tricked into unpacking a specially crafted source package, a remote attacker could modify files outside the target unpack directory, leading to a denial of service or potentially gaining access to the system.