CVE-2014-0475

Múltiples vulnerabilidades de salto de directorio en GNU C Library (también conocido como glibc or libc6) anterior a 2.20 permiten a atacantes dependientes de contexto evadir las restricciones ForceCommand y posiblemente tener otro impacto no especificado a través de un .. (punto punto) en una variable (1) LC_*, (2) LANG o otra variable del entorno local.

A directory traveral flaw was found in the way glibc loaded locale files. An attacker able to make an application use a specially crafted locale name value (for example, specified in an LC_* environment variable) could possibly use this flaw to execute arbitrary code with the privileges of that application.

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.