Digium Asterisk up to 11.2.1 res_format_attr_h264.c h264_format_attr_sdp_parse memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Digium Asterisk up to 11.2.1. This affects the function h264_format_attr_sdp_parse of the file res/res_format_attr_h264.c. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2013-2685. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Digium Asterisk up to 11.2.1 (Communications System). Affected by this issue is the function h264_format_attr_sdp_parse of the file res/res_format_attr_h264.c. 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 confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in res/res_format_attr_h264.c in Asterisk Open Source 11.x before 11.2.2 allows remote attackers to execute arbitrary code via a long sprop-parameter-sets H.264 media attribute in a SIP Session Description Protocol (SDP) header.

The weakness was published 03/27/2013 by Ulf Härnhammar as confirmed advisory (Website). The advisory is shared for download at issues.asterisk.org. The public release has been coordinated with the vendor. This vulnerability is handled as CVE-2013-2685 since 03/25/2013. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 65836 (Fedora 18 : asterisk-11.2.2-1.fc18 (2013-4566)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks.

Upgrading to version 11.2.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 12889.

The vulnerability is also documented in the databases at X-Force (83125), Tenable (65836), SecurityFocus (BID 58760†), OSVDB (91753†) and Secunia (SA52776†). Similar entries are available at VDB-8119 and VDB-8121. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 65836
Nessus Name: Fedora 18 : asterisk-11.2.2-1.fc18 (2013-4566)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 865535
OpenVAS Name: Fedora Update for asterisk FEDORA-2013-4566
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Asterisk 11.2.2
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

03/25/2013 🔍
03/27/2013 +2 days 🔍
03/27/2013 +0 days 🔍
03/27/2013 +0 days 🔍
03/27/2013 +0 days 🔍
03/27/2013 +0 days 🔍
03/28/2013 +1 days 🔍
04/01/2013 +4 days 🔍
04/02/2013 +1 days 🔍
04/08/2013 +6 days 🔍
04/14/2013 +6 days 🔍
05/06/2021 +2944 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: issues.asterisk.org
Researcher: Ulf Härnhammar
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-2685 (🔍)
GCVE (CVE): GCVE-0-2013-2685
GCVE (VulDB): GCVE-100-8120

IAVM: 🔍

X-Force: 83125
SecurityFocus: 58760 - Asterisk Open Source CVE-2013-2685 Stack Buffer Overflow Vulnerability
Secunia: 52776 - Asterisk Multiple Vulnerabilities, Highly Critical
OSVDB: 91753
SecurityTracker: 1028359 - Asterisk Stack Overflow in Processing SIP Headers Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 39099 - Digium Asterisk Open Source 11 Before 11.2.2 Remote Arbitrary Code Execution via a SIP Header, High

See also: 🔍

Entryinfo

Created: 04/02/2013 15:50
Updated: 05/06/2021 16:44
Changes: 04/02/2013 15:50 (89), 12/24/2017 09:40 (7), 05/06/2021 16:44 (2)
Complete: 🔍
Committer:
Cache ID: 216::103

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