CVE-2013-3949: Apple Mac OS X

Low severity, CVSS 2.1. EPSS: 0.5% chance of exploitation in the next 30 days.

The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not prevent use of the _POSIX_SPAWN_DISABLE_ASLR and _POSIX_SPAWN_ALLOW_DATA_EXEC flags for setuid and setgid programs, which allows local users to bypass intended access restrictions via a wrapper program that calls the posix_spawnattr_setflags function.

Affected products

• Apple Mac OS X: version 10.8.0 only; version 10.8.1 only; version 10.8.2 only; version 10.8.3 only; version 10.8.4 only

Published 2013-06-05. Last modified 2026-06-16.