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 unsolicited announcements co

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 unsolicited announcements containing CNAME resource records pointing it to resource records with short TTLs. As soon as they expire avahi-daemon crashes.

Affected Products

References

• https://github.com/avahi/avahi/commit/f66be13d7f31a3ef806d226bf8b67240179d309a(Patch)
• https://github.com/avahi/avahi/issues/683(Issue Tracking, Patch)
• https://github.com/avahi/avahi/security/advisories/GHSA-cp79-r4x9-vf52(Vendor Advisory)