Executive Summary

Summary
Title avahi security update
Informations
Name RHSA-2011:0436 First vendor Publication 2011-04-12
Vendor RedHat Last vendor Modification 2011-04-12
Severity (Vendor) Moderate Revision 01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated avahi packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

2. Relevant releases/architectures:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

3. Description:

Avahi is an implementation of the DNS Service Discovery and Multicast DNS specifications for Zero Configuration Networking. It facilitates service discovery on a local network. Avahi and Avahi-aware applications allow you to plug your computer into a network and, with no configuration, view other people to chat with, view printers to print to, and find shared files on other computers.

A flaw was found in the way the Avahi daemon (avahi-daemon) processed Multicast DNS (mDNS) packets with an empty payload. An attacker on the local network could use this flaw to cause avahi-daemon on a target system to enter an infinite loop via an empty mDNS UDP packet. (CVE-2011-1002)

All users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the update, avahi-daemon will be restarted automatically.

4. Solution:

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

667187 - CVE-2011-1002 avahi: daemon infinite loop triggered by an empty UDP packet (CVE-2010-2244 fix regression)

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2011-0436.html

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:12564
 
Oval ID: oval:org.mitre.oval:def:12564
Title: DSA-2174-1 avahi -- denial of service
Description: It was discovered that avahi, an implementation of the zeroconf protocol, can be crashed remotely by a single UDP packet, which may result in a denial of service.
Family: unix Class: patch
Reference(s): DSA-2174-1
CVE-2011-1002
Version: 5
Platform(s): Debian GNU/Linux 5.0
Debian GNU/Linux 6.0
Debian GNU/kFreeBSD 6.0
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:12699
 
Oval ID: oval:org.mitre.oval:def:12699
Title: DSA-2086-1 avahi -- several
Description: Several vulnerabilities have been discovered in the Avahi mDNS/DNS-SD daemon. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2009-0758 Rob Leslie discovered a denial of service vulnerability in the code used to reflect unicast mDNS traffic. CVE-2010-2244 Ludwig Nussel discovered a denial of service vulnerability in the processing of malformed DNS packets. For the stable distribution, this problem has been fixed in version 0.6.23-3lenny2. For the unstable distribution, these problems have been fixed in version 0.6.26-1. We recommend that you upgrade your Avahi packages.
Family: unix Class: patch
Reference(s): DSA-2086-1
CVE-2009-0758
CVE-2010-2244
Version: 5
Platform(s): Debian GNU/Linux 5.0
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:13195
 
Oval ID: oval:org.mitre.oval:def:13195
Title: USN-1084-1 -- avahi vulnerability
Description: It was discovered that Avahi incorrectly handled empty UDP packets. A remote attacker could send a specially-crafted packet and cause Avahi to hang, resulting in a denial of service.
Family: unix Class: patch
Reference(s): USN-1084-1
CVE-2011-1002
Version: 5
Platform(s): Ubuntu 8.04
Ubuntu 10.10
Ubuntu 9.10
Ubuntu 10.04
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:13324
 
Oval ID: oval:org.mitre.oval:def:13324
Title: USN-992-1 -- avahi vulnerabilities
Description: It was discovered that Avahi incorrectly handled certain mDNS query packets when the reflector feature is enabled, which is not the default configuration on Ubuntu. A remote attacker could send crafted mDNS queries and perform a denial of service on the server and on the network. This issue only affected Ubuntu 8.04 LTS and 9.04. It was discovered that Avahi incorrectly handled mDNS packets with corrupted checksums. A remote attacker could send crafted mDNS packets and cause Avahi to crash, resulting in a denial of service
Family: unix Class: patch
Reference(s): USN-992-1
CVE-2009-0758
CVE-2010-2244
Version: 5
Platform(s): Ubuntu 8.04
Ubuntu 10.04
Ubuntu 9.04
Ubuntu 9.10
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21860
 
Oval ID: oval:org.mitre.oval:def:21860
Title: RHSA-2011:0779: avahi security and bug fix update (Moderate)
Description: avahi-core/socket.c in avahi-daemon in Avahi before 0.6.29 allows remote attackers to cause a denial of service (infinite loop) via an empty mDNS (1) IPv4 or (2) IPv6 UDP packet to port 5353. NOTE: this vulnerability exists because of an incorrect fix for CVE-2010-2244.
Family: unix Class: patch
Reference(s): RHSA-2011:0779-01
CVE-2011-1002
Version: 4
Platform(s): Red Hat Enterprise Linux 6
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21960
 
Oval ID: oval:org.mitre.oval:def:21960
Title: RHSA-2011:0436: avahi security update (Moderate)
Description: avahi-core/socket.c in avahi-daemon in Avahi before 0.6.29 allows remote attackers to cause a denial of service (infinite loop) via an empty mDNS (1) IPv4 or (2) IPv6 UDP packet to port 5353. NOTE: this vulnerability exists because of an incorrect fix for CVE-2010-2244.
Family: unix Class: patch
Reference(s): RHSA-2011:0436-01
CESA-2011:0436
CVE-2011-1002
Version: 4
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22345
 
Oval ID: oval:org.mitre.oval:def:22345
Title: RHSA-2010:0528: avahi security update (Moderate)
Description: The AvahiDnsPacket function in avahi-core/socket.c in avahi-daemon in Avahi 0.6.16 and 0.6.25 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a DNS packet with an invalid checksum followed by a DNS packet with a valid checksum, a different vulnerability than CVE-2008-5081.
Family: unix Class: patch
Reference(s): RHSA-2010:0528-01
CESA-2010:0528
CVE-2009-0758
CVE-2010-2244
Version: 29
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22789
 
Oval ID: oval:org.mitre.oval:def:22789
Title: ELSA-2010:0528: avahi security update (Moderate)
Description: The AvahiDnsPacket function in avahi-core/socket.c in avahi-daemon in Avahi 0.6.16 and 0.6.25 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a DNS packet with an invalid checksum followed by a DNS packet with a valid checksum, a different vulnerability than CVE-2008-5081.
Family: unix Class: patch
Reference(s): ELSA-2010:0528-01
CVE-2009-0758
CVE-2010-2244
Version: 13
Platform(s): Oracle Linux 5
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22953
 
Oval ID: oval:org.mitre.oval:def:22953
Title: ELSA-2011:0779: avahi security and bug fix update (Moderate)
Description: avahi-core/socket.c in avahi-daemon in Avahi before 0.6.29 allows remote attackers to cause a denial of service (infinite loop) via an empty mDNS (1) IPv4 or (2) IPv6 UDP packet to port 5353. NOTE: this vulnerability exists because of an incorrect fix for CVE-2010-2244.
Family: unix Class: patch
Reference(s): ELSA-2011:0779-01
CVE-2011-1002
Version: 6
Platform(s): Oracle Linux 6
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23132
 
Oval ID: oval:org.mitre.oval:def:23132
Title: ELSA-2011:0436: avahi security update (Moderate)
Description: avahi-core/socket.c in avahi-daemon in Avahi before 0.6.29 allows remote attackers to cause a denial of service (infinite loop) via an empty mDNS (1) IPv4 or (2) IPv6 UDP packet to port 5353. NOTE: this vulnerability exists because of an incorrect fix for CVE-2010-2244.
Family: unix Class: patch
Reference(s): ELSA-2011:0436-01
CVE-2011-1002
Version: 6
Platform(s): Oracle Linux 5
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27764
 
Oval ID: oval:org.mitre.oval:def:27764
Title: DEPRECATED: ELSA-2011-0779 -- avahi security and bug fix update (moderate)
Description: [0.6.25-11] - Fix for CVE-2011-1002 - Resolves: #684886 - Actually apply the patch [0.6.25-10] - Fix for CVE-2011-1002 - Resolves: #684886 [0.6.25-9] - Don't stomp on rpm's default CFLAGS when building
Family: unix Class: patch
Reference(s): ELSA-2011-0779
CVE-2011-1002
Version: 4
Platform(s): Oracle Linux 6
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:28123
 
Oval ID: oval:org.mitre.oval:def:28123
Title: DEPRECATED: ELSA-2011-0436 -- avahi security update (moderate)
Description: [0.6.16-10] - Fix for CVE-2011-1002 - Resolves: #684884
Family: unix Class: patch
Reference(s): ELSA-2011-0436
CVE-2011-1002
Version: 4
Platform(s): Oracle Linux 5
Product(s): avahi
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:28248
 
Oval ID: oval:org.mitre.oval:def:28248
Title: DEPRECATED: ELSA-2010-0528 -- avahi security update (moderate)
Description: [0.6.16-9.el5] - Related: #609318 - Fixes CVE-2010-2244 [0.6.16-8.el5] - Related: #609318 - Fixes CVE-2010-2244
Family: unix Class: patch
Reference(s): ELSA-2010-0528
CVE-2009-0758
CVE-2010-2244
Version: 4
Platform(s): Oracle Linux 5
Product(s): avahi
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 35
Os 4
Os 3
Os 1
Os 2

OpenVAS Exploits

Date Description
2012-07-30 Name : CentOS Update for avahi CESA-2011:0436 centos5 x86_64
File : nvt/gb_CESA-2011_0436_avahi_centos5_x86_64.nasl
2012-06-06 Name : RedHat Update for avahi RHSA-2011:0779-01
File : nvt/gb_RHSA-2011_0779-01_avahi.nasl
2012-02-12 Name : Gentoo Security Advisory GLSA 201110-17 (avahi)
File : nvt/glsa_201110_17.nasl
2011-09-12 Name : Fedora Update for avahi FEDORA-2011-11588
File : nvt/gb_fedora_2011_11588_avahi_fc14.nasl
2011-08-09 Name : CentOS Update for avahi CESA-2010:0528 centos5 i386
File : nvt/gb_CESA-2010_0528_avahi_centos5_i386.nasl
2011-08-09 Name : CentOS Update for avahi CESA-2011:0436 centos5 i386
File : nvt/gb_CESA-2011_0436_avahi_centos5_i386.nasl
2011-05-12 Name : avahi -- denial of service
File : nvt/freebsd_avahi.nasl
2011-04-19 Name : RedHat Update for avahi RHSA-2011:0436-01
File : nvt/gb_RHSA-2011_0436-01_avahi.nasl
2011-03-15 Name : Ubuntu Update for avahi vulnerability USN-1084-1
File : nvt/gb_ubuntu_USN_1084_1.nasl
2011-03-09 Name : Debian Security Advisory DSA 2174-1 (avahi)
File : nvt/deb_2174_1.nasl
2011-03-07 Name : Mandriva Update for pango MDVSA-2011:040 (pango)
File : nvt/gb_mandriva_MDVSA_2011_040.nasl
2011-02-28 Name : Mandriva Update for avahi MDVSA-2011:037 (avahi)
File : nvt/gb_mandriva_MDVSA_2011_037.nasl
2010-10-19 Name : Mandriva Update for avahi MDVSA-2010:204 (avahi)
File : nvt/gb_mandriva_MDVSA_2010_204.nasl
2010-10-01 Name : Ubuntu Update for avahi vulnerabilities USN-992-1
File : nvt/gb_ubuntu_USN_992_1.nasl
2010-08-21 Name : Debian Security Advisory DSA 2086-1 (avahi)
File : nvt/deb_2086_1.nasl
2010-07-16 Name : RedHat Update for avahi RHSA-2010:0528-01
File : nvt/gb_RHSA-2010_0528-01_avahi.nasl
2010-07-12 Name : Fedora Update for avahi FEDORA-2010-10584
File : nvt/gb_fedora_2010_10584_avahi_fc12.nasl
2010-07-12 Name : Fedora Update for avahi FEDORA-2010-10581
File : nvt/gb_fedora_2010_10581_avahi_fc13.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
70948 Avahi avahi-core/socket.c Empty UDP Packet Remote DoS

Avahi contains a flaw that may allow a remote denial of service. The issue is triggered when 'avahi-core/socket.c' in 'avahi-daemon' fails to properly handle empty IPv4 or IPv6 UDP packets sent to port 5353, allowing a remote attacker to cause an infinite loop which will trigger a denial of service.
66038 Avahi avahi-core/socket.c Multiple Function DNS Packet Remote DoS

Nessus® Vulnerability Scanner

Date Description
2014-11-17 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2010-0622.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_3_avahi-110228.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2010-0528.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2011-0436.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20110519_avahi_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20110412_avahi_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20100713_avahi_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2011-10-24 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201110-17.nasl - Type : ACT_GATHER_INFO
2011-09-12 Name : The remote Fedora host is missing a security update.
File : fedora_2011-11588.nasl - Type : ACT_GATHER_INFO
2011-05-20 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0779.nasl - Type : ACT_GATHER_INFO
2011-05-05 Name : The remote openSUSE host is missing a security update.
File : suse_11_2_avahi-110228.nasl - Type : ACT_GATHER_INFO
2011-04-15 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2011-0436.nasl - Type : ACT_GATHER_INFO
2011-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0436.nasl - Type : ACT_GATHER_INFO
2011-03-15 Name : The remote Fedora host is missing a security update.
File : fedora_2011-3033.nasl - Type : ACT_GATHER_INFO
2011-03-15 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_8b986a054dbe11e08b9a02e0184b8d35.nasl - Type : ACT_GATHER_INFO
2011-03-08 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-1084-1.nasl - Type : ACT_GATHER_INFO
2011-03-04 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2011-040.nasl - Type : ACT_GATHER_INFO
2011-03-01 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2174.nasl - Type : ACT_GATHER_INFO
2011-02-25 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2011-037.nasl - Type : ACT_GATHER_INFO
2010-10-15 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2010-204.nasl - Type : ACT_GATHER_INFO
2010-10-06 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-992-1.nasl - Type : ACT_GATHER_INFO
2010-08-05 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2086.nasl - Type : ACT_GATHER_INFO
2010-07-28 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2010-0528.nasl - Type : ACT_GATHER_INFO
2010-07-16 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2010-0528.nasl - Type : ACT_GATHER_INFO
2010-07-07 Name : The remote Fedora host is missing a security update.
File : fedora_2010-10581.nasl - Type : ACT_GATHER_INFO
2010-07-07 Name : The remote Fedora host is missing a security update.
File : fedora_2010-10584.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2014-02-17 11:54:35
  • Multiple Updates
2013-05-11 00:52:09
  • Multiple Updates