CVE-2013-3954
The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate...
The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to (1) cause a denial of service (panic) via a size value that is inconsistent with a header count field, or (2) obtain sensitive information from kernel heap memory via a certain size value in conjunction with a crafted buffer.
Exploit likelihood
What each source reports
NVD Score used
The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to (1) cause a denial of service (panic) via a size value that is inconsistent with a header count field, or (2) obtain sensitive information from kernel heap memory via a certain size value in conjunction with a crafted buffer.
- Record
CVE-2013-3954- CVSS 2.0
- 6.9 Medium
AV:L/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to (1) cause a denial of service (panic) via a size value that is inconsistent with a header count field, or (2) obtain sensitive information from kernel heap memory via a certain size value in conjunction with a crafted buffer.
- Record
CVE-2013-3954- Updated
- 2026-11-02
EUVDEUVD-2013-3886 No score
The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to (1) cause a denial of service (panic) via a size value that is inconsistent with a header count field, or (2) obtain sensitive information from kernel heap memory via a certain size value in conjunction with a crafted buffer.
- Record
EUVD-2013-3886- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-h4gh-vjrf-v43x No score
The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate...
The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to (1) cause a denial of service (panic) via a size value that is inconsistent with a header count field, or (2) obtain sensitive information from kernel heap memory via a certain size value in conjunction with a crafted buffer.
- Record
GHSA-h4gh-vjrf-v43x- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2013-3954 is a medium vulnerability (CVSS 6.9) in Apple Mac Os X, published June 5, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.42%, the 36th percentile. No source names a fixed version.
References
syscan.org/index.php/sg/program/day/2
securitytracker.com/id/1029054
antid0te.com/syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf
lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
secunia.com/advisories/54886
support.apple.com/kb/HT5934
nvd.nist.gov/vuln/detail/CVE-2013-3954
github.com/advisories/GHSA-h4gh-vjrf-v43x