Digium Asterisk 1.4 Beta/1.4.1/1.4.2 Parser chan_sip.c process_sdp SDP stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.1$0-$5k0.00

A vulnerability was found in Digium Asterisk 1.4 Beta/1.4.1/1.4.2 (Communications System) and classified as critical. Affected by this issue is the function process_sdp of the file chan_sip.c of the component Parser. The manipulation of the argument SDP with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. CVE summarizes:

Multiple stack-based buffer overflows in the process_sdp function in chan_sip.c of the SIP channel T.38 SDP parser in Asterisk before 1.4.3 allow remote attackers to execute arbitrary code via a long (1) T38FaxRateManagement or (2) T38FaxUdpEC SDP parameter in an SIP message, as demonstrated using SIP INVITE.

The weakness was presented 04/25/2007 by Barrie Dempster with NGS Software (Website). The advisory is shared for download at securitytracker.com. This vulnerability is handled as CVE-2007-2293 since 04/26/2007. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

After even before and not, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 25671 (Asterisk SIP Channel T.38 SDP Parsing Multiple Buffer Overflows), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gain a shell remotely and relying on port 5060.

Upgrading to version 1.4.3 eliminates this vulnerability. Attack attempts may be identified with Snort ID 14608. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 8575.

The vulnerability is also documented in the databases at X-Force (33895) and Tenable (25671). See 36429 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: 9.0
VulDB Meta Temp Score: 8.1

VulDB Base Score: 9.0
VulDB Temp Score: 8.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 25671
Nessus Name: Asterisk SIP Channel T.38 SDP Parsing Multiple Buffer Overflows
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Asterisk 1.4.3

Snort ID: 14608
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

10/24/2006 🔍
04/25/2007 +183 days 🔍
04/25/2007 +0 days 🔍
04/25/2007 +0 days 🔍
04/25/2007 +0 days 🔍
04/25/2007 +0 days 🔍
04/26/2007 +0 days 🔍
04/26/2007 +0 days 🔍
04/26/2007 +0 days 🔍
07/06/2007 +71 days 🔍
07/08/2007 +2 days 🔍
03/13/2015 +2805 days 🔍
07/14/2021 +2315 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: securitytracker.com⛔
Researcher: Barrie Dempster
Organization: NGS Software
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-2293 (🔍)
X-Force: 33895
SecurityTracker: 1017951 - Asterisk Buffer Overflow in SIP/SDP T.38 Support Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 15560 - Asterisk Multiple Buffer Overflows Allows Remote Code Execution via Parameters in an SIP Message, Medium
SecurityFocus: 23648 - Asterisk SIP T.38 SDP Parsing Remote Stack Buffer Overflow Vulnerabilities
Secunia: 24977 - Asterisk T.38 SDP Buffer Overflows and Management Interface Denial of Service, Highly Critical
OSVDB: 35368 - Asterisk T.38 SDP Parser chan_sip.c process_sdp Function Overflow
Vupen: ADV-2007-1534

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

Entryinfo

Created: 03/13/2015 14:56
Updated: 07/14/2021 14:11
Changes: 03/13/2015 14:56 (73), 12/24/2017 09:43 (23), 07/14/2021 14:11 (2)
Complete: 🔍
Cache ID: 52:A24:103

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