What’s Vulnerable › Vulnerabilities

CVE-2013-3949

• Severity: low (CVSS 2.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2013-06-05 · updated 2026-06-16
• Weakness: CWE-264

Description

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

• macOS: 10.8.0, 10.8.1, 10.8.2, 10.8.3, 10.8.4

References

• http://antid0te.com/syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf
• http://www.syscan.org/index.php/sg/program/day/2
• http://antid0te.com/syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf
• http://www.syscan.org/index.php/sg/program/day/2

Get alerted when CVE-2013-3949 or the next vulnerability affects your stack