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GLSA-200904-10 : Avahi: Denial of Service

high Nessus Plugin ID 36138

Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-200904-10 (Avahi: Denial of Service)

 Rob Leslie reported that the originates_from_local_legacy_unicast_socket() function in avahi-core/server.c does not account for the network byte order of a port number when processing incoming multicast packets, leading to a multicast packet storm.
 Impact :

 A remote attacker could send specially crafted legacy unicast mDNS query packets to the Avahi daemon, resulting in a Denial of Service due to network bandwidth and CPU consumption.
 Workaround :

 There is no known workaround at this time.

Solution

All Avahi users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=net-dns/avahi-0.6.24-r2'

See Also

https://security.gentoo.org/glsa/200904-10

Plugin Details

Severity: High

ID: 36138

File Name: gentoo_GLSA-200904-10.nasl

Version: 1.12

Type: local

Published: 4/11/2009

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:avahi, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 4/8/2009

Reference Information

CVE: CVE-2009-0758

CWE: 399

GLSA: 200904-10