CVE-2014-4043

La función posix_spawn_file_actions_addopen en glibc anterior a 2.20 no copia su argumento de ruta de acuerdo con la especificación POSIX, lo que permite a atacantes dependientes de contexto provocar vulnerabilidades de uso después de liberación.

USN-2306-1 fixed vulnerabilities in the GNU C Library. On Ubuntu 10.04 LTS, the fix for CVE-2013-4357 introduced a memory leak in getaddrinfo. This update fixes the problem. Maksymilian Arciemowicz discovered that the GNU C Library incorrectly handled the getaddrinfo() function. An attacker could use this issue to cause a denial of service. This issue only affected Ubuntu 10.04 LTS. It was discovered that the GNU C Library incorrectly handled the getaddrinfo() function. An attacker could use this issue to cause a denial of service. This issue only affected Ubuntu 10.04 LTS and Ubuntu 12.04 LTS. Stephane Chazelas discovered that the GNU C Library incorrectly handled locale environment variables. An attacker could use this issue to possibly bypass certain restrictions such as the ForceCommand restrictions in OpenSSH. David Reid, Glyph Lefkowitz, and Alex Gaynor discovered that the GNU C Library incorrectly handled posix_spawn_file_actions_addopen() path arguments. An attacker could use this issue to cause a denial of service. Various other issues were also addressed.