#VU17349 Input validation error in Avahi - CVE-2017-6519
Published: February 1, 2019
Vulnerability identifier: #VU17349
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-6519
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Avahi
Avahi
Software vendor:
avahi.org
avahi.org
Description
The vulnerability allows remote attackers to perform a denial of service (DoS) attack.
The vulnerability exists due to avahi-daemon inadvertently responds to IPv6 unicast queries with source addresses that are not on-link. A remote attacker can submit specially crafted port-5353 UDP packet to trigger traffic amplification and cause the service to crash.
Remediation
Install update from vendor's website.