National Vulnerability Database (NVD) National Vulnerability Database (CVE-2009-0758)

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NVD is the U.S. government repository of standards based vulnerability management data. This data enables automation of vulnerability management, security measurement, and compliance (e.g. FISMA).

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NVD contains:

CVE Vulnerabilities: 39671
Checklists: 129
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OVAL Queries: 2517
CPE Names: 17905

Last updated: Sun Nov 22 18:29:50 EST 2009

CVE Publication rate: 9.67

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Vulnerability Summary for CVE-2009-0758

Original release date:03/03/2009

Last revised:06/09/2009

Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:7.8 (HIGH) (AV:N/AC:L/Au:N/C:N/I:N/A:C) (legend)

Impact Subscore: 6.9

Exploitability Subscore: 10.0

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

Vendor Statements (disclaimer)

Official Statement from Red Hat (03/19/2009)

Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVe-2009-0758 The Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw. More information regarding issue severity can be found here: http://www.redhat.com/security/updates/classification/

References to Advisories, Solutions, and Tools

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External Source: BID

Name: 33946

Hyperlink:http://www.securityfocus.com/bid/33946

External Source: MLIST

Name: [oss-security] 20090302 CVE id request: avahi

Hyperlink:http://www.openwall.com/lists/oss-security/2009/03/02/1

External Source: MANDRIVA

Name: MDVSA-2009:076

Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2009:076

External Source: MISC

Name: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=517683

Hyperlink:http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=517683