CVE-2013-3949

Name: CVE-2013-3949
Creator: NVD / NIST
Published: 2013-06-05T14:39:55.86+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.49%

Last modified Jun 16, 2026

CVE-2013-3949 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

0.49%

38.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Apple	Mac Os X	10.8.0
Apple	Mac Os X	10.8.1
Apple	Mac Os X	10.8.2
Apple	Mac Os X	10.8.3
Apple	Mac Os X	10.8.4

References

Timeline

Published: Jun 5, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-3949?

How severe is CVE-2013-3949?

Severity scoring for CVE-2013-3949 is pending analysis. The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.

How do I fix CVE-2013-3949?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-3949?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST