Digium Asterisk up to Beta 6 IAX2 Channel Driver associated null pointer dereference

CVSS Meta Temp Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Digium Asterisk. Affected by this issue is some unknown functionality of the component IAX2 Channel Driver. This manipulation of the argument associated causes null pointer dereference. This vulnerability is registered as CVE-2007-3763. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Digium Asterisk (Communications System) and classified as problematic. Affected by this vulnerability is an unknown functionality of the component IAX2 Channel Driver. The manipulation of the argument associated with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

The IAX2 channel driver (chan_iax2) in Asterisk before 1.2.22 and 1.4.x before 1.4.8, Business Edition before B.2.2.1, AsteriskNOW before beta7, Appliance Developer Kit before 0.5.0, and s800i before 1.0.2 allows remote attackers to cause a denial of service (crash) via a crafted (1) LAGRQ or (2) LAGRP frame that contains information elements of IAX frames, which results in a NULL pointer dereference when Asterisk does not properly set an associated variable.

The weakness was published 07/18/2007 by Chris Clark (Website). The advisory is shared at ftp.digium.com. This vulnerability is known as CVE-2007-3763 since 07/13/2007. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 25938 (Debian DSA-1358-1 : asterisk - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks.

Upgrading to version 1.4_beta eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (35465), Exploit-DB (4249), Tenable (25938), SecurityFocus (BID 24950†) and Secunia (SA26099†). Similar entries are available at VDB-35469, VDB-36613, VDB-36430 and VDB-36429. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 25938
Nessus Name: Debian DSA-1358-1 : asterisk - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 58577
OpenVAS Name: Debian Security Advisory DSA 1358-1 (asterisk)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Asterisk 1.4_beta
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

07/13/2007 🔍
07/17/2007 +4 days 🔍
07/18/2007 +1 days 🔍
07/18/2007 +0 days 🔍
07/18/2007 +0 days 🔍
07/18/2007 +0 days 🔍
07/18/2007 +0 days 🔍
07/26/2007 +8 days 🔍
03/15/2015 +2789 days 🔍
01/20/2025 +3599 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: ftp.digium.com
Researcher: Chris Clark
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-3763 (🔍)
GCVE (CVE): GCVE-0-2007-3763
GCVE (VulDB): GCVE-100-37885

OVAL: 🔍

X-Force: 35465
SecurityFocus: 24950 - Asterisk Multiple Remote Denial of Service Vulnerabilities
Secunia: 26099 - Asterisk Multiple Vulnerabilities, Highly Critical
SecurityTracker: 1018407 - Asterisk STUN, Skinny Channel Driver, and IAX2 Channel Driver Bugs Let Remote Users Deny Service or Execute Arbitrary Code
Vulnerability Center: 15695 - Digium Asterisk, AsteriskNOW and Appliance Developer Kit IAX2 Channel Driver Allows DoS, Medium
Vupen: ADV-2007-2563

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

Entryinfo

Created: 03/15/2015 15:58
Updated: 01/20/2025 13:00
Changes: 03/15/2015 15:58 (67), 12/24/2017 09:43 (20), 07/21/2021 08:56 (3), 01/20/2025 13:00 (16)
Complete: 🔍
Cache ID: 216::103

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