Digium Asterisk prior C.3.7.4 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability was found in Digium Asterisk (Communications System). It has been rated as critical. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.11.1 and 10.x before 10.3.1 and Asterisk Business Edition C.3.x before C.3.7.4, when the trustrpid option is enabled, allows remote authenticated users to cause a denial of service (daemon crash) by sending a SIP UPDATE message that triggers a connected-line update attempt without an associated channel.

The weakness was presented 04/23/2012 by Matt Jordan as AST-2012-006 as not defined knowledge base article (Website). The advisory is available at downloads.asterisk.org. This vulnerability is handled as CVE-2012-2416 since 04/23/2012. The exploitation is known to be easy. The attack may be launched remotely. The requirement for exploitation is a simple authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 58906 (Asterisk Remote Crash Vulnerability in SIP Channel Driver (AST-2012-006)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r.

Upgrading to version C.3.7.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (75101) and Tenable (58906). See 5316 and 5317 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Nessus ID: 58906
Nessus Name: Asterisk Remote Crash Vulnerability in SIP Channel Driver (AST-2012-006)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 71271
OpenVAS Name: FreeBSD Ports: asterisk16
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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Upgrade: Asterisk C.3.7.4

Timelineinfo

04/23/2012 🔍
04/23/2012 +0 days 🔍
04/23/2012 +0 days 🔍
04/23/2012 +0 days 🔍
04/27/2012 +4 days 🔍
04/27/2012 +0 days 🔍
04/30/2012 +3 days 🔍
04/30/2012 +0 days 🔍
05/03/2012 +3 days 🔍
05/24/2012 +21 days 🔍
03/24/2021 +3226 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: AST-2012-006
Researcher: Matt Jordan
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-2416 (🔍)
X-Force: 75101
Vulnerability Center: 35155 - Asterisk Open Source chan_sip.c Remote DoS Vulnerability via a Crafted SIP UPDATE Message, Medium
SecurityFocus: 53205 - Asterisk SIP Channel Driver Denial Of Service Vulnerability
Secunia: 48891 - Asterisk Multiple Vulnerabilities, Moderately Critical
OSVDB: 81456

See also: 🔍

Entryinfo

Created: 05/03/2012 14:52
Updated: 03/24/2021 09:43
Changes: 05/03/2012 14:52 (71), 12/24/2017 09:34 (9), 03/24/2021 09:43 (3)
Complete: 🔍

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