Digium Asterisk up to 1.2.29 SIP input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability was found in Digium Asterisk up to 1.2.29 (Communications System). It has been classified as problematic. This affects some unknown processing of the component SIP Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

Asterisk Open Source 1.0.x and 1.2.x before 1.2.29 and Business Edition A.x.x and B.x.x before B.2.5.3, when pedantic parsing (aka pedanticsipchecking) is enabled, allows remote attackers to cause a denial of service (daemon crash) via a SIP INVITE message that lacks a From header, related to invocations of the ast_uri_decode function, and improper handling of (1) an empty const string and (2) a NULL pointer.

The weakness was presented 06/04/2008 by Hooi Ng (Website). It is possible to read the advisory at bugs.digium.com. This vulnerability is uniquely identified as CVE-2008-2119 since 05/08/2008. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Armando Oliveira and been published 1 days after the advisory. The exploit is shared for download at downloads.digium.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 38677 (GLSA-200905-01 : Asterisk: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at security.gentoo.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (42823), Exploit-DB (5749), Tenable (38677), OSVDB (46014†) and Secunia (SA30517†). See VDB-45523 for similar entry.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Armando Oliveira
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 38677
Nessus Name: GLSA-200905-01 : Asterisk: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 63940
OpenVAS Name: Gentoo Security Advisory GLSA 200905-01 (asterisk)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: security.gentoo.org

Timelineinfo

05/08/2008 🔍
06/03/2008 +26 days 🔍
06/04/2008 +1 days 🔍
06/04/2008 +0 days 🔍
06/04/2008 +0 days 🔍
06/04/2008 +0 days 🔍
06/04/2008 +0 days 🔍
06/05/2008 +0 days 🔍
06/05/2008 +0 days 🔍
06/19/2008 +14 days 🔍
05/11/2009 +326 days 🔍
10/27/2024 +5648 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: bugs.digium.com
Researcher: Hooi Ng
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-2119 (🔍)
X-Force: 42823 - Asterisk ast_uri_decode() denial of service, Medium Risk
Secunia: 30517 - Asterisk "pedantic" SIP Processing Denial of Service, Moderately Critical
OSVDB: 46014 - Asterisk Pedantic Parsing SIP INVITE Message Handling Remote DoS
SecurityTracker: 1020166 - Asterisk Pedantic Mode Bug in ast_uri_decode() Lets Remote Users Deny Service
Vulnerability Center: 21969 - Digium Asterisk Open Source and Business Edition SIP INVITE Message Remote DoS Vulnerability, Medium
Vupen: ADV-2008-1731

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

Entryinfo

Created: 06/19/2008 02:49 PM
Updated: 10/27/2024 09:39 AM
Changes: 06/19/2008 02:49 PM (92), 12/24/2017 09:34 AM (6), 03/16/2021 02:38 PM (3), 10/27/2024 09:39 AM (15)
Complete: 🔍
Cache ID: 18:398:40

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