Digium Asterisk up to 1.8.4.1 Channel Driver reqresp_parser.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Digium Asterisk. It has been declared as problematic. The affected element is an unknown function of the file reqresp_parser.c of the component Channel Driver. Such manipulation leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2011-2216. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Digium Asterisk (Communications System). Affected by this issue is some unknown processing of the file reqresp_parser.c of the component Channel Driver. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

reqresp_parser.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.4.2 does not initialize certain strings, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed Contact header.

The weakness was disclosed 06/06/2011 by Jonathan Rose (Website). The advisory is available at xforce.iss.net. This vulnerability is handled as CVE-2011-2216. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 55425 (Fedora 15 : asterisk-1.8.4.2-1.fc15.1 (2011-8319)), 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 1.8.4.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (67812), Tenable (55425), SecurityFocus (BID 48096†), OSVDB (72752†) and SecurityTracker (ID 1025598†). If you want to get best quality of vulnerability data, you may have to visit 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: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 55425
Nessus Name: Fedora 15 : asterisk-1.8.4.2-1.fc15.1 (2011-8319)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 69754
OpenVAS Name: FreeBSD Ports: asterisk18
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Asterisk 1.8.4.1

Timelineinfo

05/23/2011 🔍
05/23/2011 +0 days 🔍
05/31/2011 +7 days 🔍
06/06/2011 +6 days 🔍
06/06/2011 +0 days 🔍
06/09/2011 +3 days 🔍
06/27/2011 +18 days 🔍
03/23/2015 +1365 days 🔍
12/28/2024 +3568 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: xforce.iss.net
Researcher: Jonathan Rose
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-2216 (🔍)
GCVE (CVE): GCVE-0-2011-2216
GCVE (VulDB): GCVE-100-57602
X-Force: 67812
SecurityFocus: 48096 - Asterisk 'Contact' Header SIP Channel Driver Denial of Service Vulnerability
Secunia: 44828
OSVDB: 72752
SecurityTracker: 1025598
Vulnerability Center: 31717 - Asterisk Open Source 1.8.x before 1.8.4.2 Remote DoS Vulnerability via a Malformed Contact Header, Medium

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/28/2024 20:14
Changes: 03/23/2015 16:50 (62), 03/23/2017 16:59 (10), 11/08/2021 10:04 (5), 11/08/2021 10:05 (1), 12/28/2024 20:14 (17)
Complete: 🔍
Cache ID: 216:A1D:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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