CVE-2021-3468

Related Vulnerabilities: CVE-2021-3468  

A flaw was found in avahi. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered.

Description

A flaw was found in avahi. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered.

Additional Information

  • Bugzilla 1939614: CVE-2021-3468 avahi: Local DoS by event-busy-loop from writing long lines to /run/avahi-daemon/socket
  • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
  • FAQ: Frequently asked questions about CVE-2021-3468