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USN-992-1: Avahi vulnerabilities

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USN-992-1: Avahi vulnerabilities

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
03/03/2009
Created
07/25/2018
Added
05/06/2013
Modified
07/09/2020

Description

The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0.6.23 does not account for the network byte order of a port number when processing incoming multicast packets, which allows remote attackers to cause a denial of service (network bandwidth and CPU consumption) via a crafted legacy unicast mDNS query packet that triggers a multicast packet storm.

Solution(s)

  • ubuntu-upgrade-libavahi-core5
  • ubuntu-upgrade-libavahi-core6

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