avahi up to 0.6.23 originates_from_local_legacy_unicast_socket resource management

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in avahi. This impacts the function originates_from_local_legacy_unicast_socket. The manipulation results in resource management. This vulnerability is identified as CVE-2008-5081. Additionally, an exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in avahi. Affected is the function originates_from_local_legacy_unicast_socket. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

The originates_from_local_legacy_unicast_socket function (avahi-core/server.c) in avahi-daemon in Avahi before 0.6.24 allows remote attackers to cause a denial of service (crash) via a crafted mDNS packet with a source port of 0, which triggers an assertion failure.

The bug was discovered 12/12/2008. The weakness was released 12/16/2008 by Jon Oberheide (Website). The advisory is shared for download at ubuntu.com. This vulnerability is traded as CVE-2008-5081 since 11/14/2008. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed by Jon Oberheide in ANSI C and been published 3 days after the advisory. The exploit is shared for download at securityfocus.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 67789 (Oracle Linux 5 : avahi (ELSA-2009-0013)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155020 (Oracle Enterprise Linux avahi Security Update (ELSA-2009-0013)).

Upgrading to version 0.1 eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (47326), Exploit-DB (7520), Tenable (67789), SecurityFocus (BID 32825†) and OSVDB (50929†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• avahi

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.5.1
• 0.5.2
• 0.6.1
• 0.6.2
• 0.6.3
• 0.6.4
• 0.6.5
• 0.6.6
• 0.6.7
• 0.6.8
• 0.6.9
• 0.6.10
• 0.6.11
• 0.6.12
• 0.6.13
• 0.6.14
• 0.6.15
• 0.6.16
• 0.6.17
• 0.6.18
• 0.6.19
• 0.6.20
• 0.6.21
• 0.6.22
• 0.6.23

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: Jon Oberheide
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 67789
Nessus Name: Oracle Linux 5 : avahi (ELSA-2009-0013)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 63062
OpenVAS Name: Debian Security Advisory DSA 1690-1 (avahi)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: avahi_portzero.rb
MetaSploit Name: Avahi Source Port 0 DoS
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: avahi 0.1
Fortigate IPS: 🔍

Timelineinfo

11/14/2008 🔍
12/12/2008 +28 days 🔍
12/12/2008 +0 days 🔍
12/12/2008 +0 days 🔍
12/16/2008 +4 days 🔍
12/16/2008 +0 days 🔍
12/19/2008 +3 days 🔍
12/19/2008 +0 days 🔍
12/29/2008 +10 days 🔍
01/12/2009 +14 days 🔍
07/12/2013 +1642 days 🔍
03/17/2015 +613 days 🔍
05/25/2025 +3722 days 🔍

Sourcesinfo

Advisory: ubuntu.com
Researcher: Jon Oberheide
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-5081 (🔍)
GCVE (CVE): GCVE-0-2008-5081
GCVE (VulDB): GCVE-100-45516

OVAL: 🔍

X-Force: 47326
SecurityFocus: 32825 - Avahi Multicast DNS Denial Of Service Vulnerability
Secunia: 33153
OSVDB: 50929 - CVE-2008-5081 - Avahi - Denial of Service Issue
Vulnerability Center: 20347 - Avahi < 0.6.24 Avahi-Daemon Remote DoS Vulnerability via a Crafted mDNS Packet, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/25/2025 05:19
Changes: 03/17/2015 16:11 (85), 08/23/2019 06:14 (9), 08/31/2024 20:36 (16), 11/19/2024 17:26 (1), 05/25/2025 05:19 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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