Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending 2 unsolicited announcements

Description

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending 2 unsolicited announcements with CNAME resource records 2 seconds apart.

Affected Products

References

• https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1(Patch)
• https://github.com/avahi/avahi/issues/678(Issue Tracking, Exploit, Patch)
• https://github.com/avahi/avahi/security/advisories/GHSA-56rf-42xr-qmmg(Vendor Advisory, Exploit, Patch)