Denial of Service Vulnerability in Avahi Daemon by Avahi
CVE-2008-5081
Key Information:
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What is CVE-2008-5081?
A vulnerability exists in the Avahi Daemon (versions prior to 0.6.24) where an attacker can craft a malicious mDNS packet with a source port of 0. When this packet is processed, it triggers an assertion failure in the originates_from_local_legacy_unicast_socket function found in avahi-core/server.c, leading to a crash of the service. This allows remote attackers to disrupt service availability, impacting any applications relying on the Avahi Daemon for network service discovery.
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Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.