Digium Asterisk up to C.2.3 input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k0.00

A vulnerability classified as problematic has been found in Digium Asterisk up to C.2.3 (Communications System). This affects an unknown functionality. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.

The bug was discovered 03/10/2009. The weakness was disclosed 03/11/2009 (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2009-0871 since 03/11/2009. It is possible to initiate the attack remotely. The successful exploitation needs a authentication. Neither technical details nor an exploit are publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 41632 (Fedora 10 : asterisk-1.6.0.15-1.fc10 (2009-9374)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 7 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (49185) and Tenable (41632). The entry 49387 is pretty similar.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
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: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 41632
Nessus Name: Fedora 10 : asterisk-1.6.0.15-1.fc10 (2009-9374)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 64967
OpenVAS Name: Fedora Core 10 FEDORA-2009-9374 (asterisk)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

03/10/2009 🔍
03/10/2009 +0 days 🔍
03/10/2009 +0 days 🔍
03/11/2009 +1 days 🔍
03/11/2009 +0 days 🔍
03/11/2009 +0 days 🔍
03/11/2009 +0 days 🔍
03/11/2009 +0 days 🔍
03/11/2009 +0 days 🔍
03/22/2009 +10 days 🔍
09/06/2009 +168 days 🔍
09/28/2009 +22 days 🔍
03/17/2015 +1996 days 🔍
08/30/2019 +1627 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: securityfocus.com⛔
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-0871 (🔍)
X-Force: 49185
SecurityTracker: 1021834
Vulnerability Center: 21327 - Asterisk Open Source SIP Channel Driver Remote Denial of Service via a SIP INVITE Request, Medium
SecurityFocus: 34070 - Asterisk Pedantic Mode SIP Channel Driver INVITE Header Remote Denial of Service Vulnerability
Secunia: 34229 - Asterisk "pedantic" SIP Processing Denial of Service, Moderately Critical
OSVDB: 52568 - Asterisk SIP Channel Driver Pedantic Functionality Malformed SIP INVITE Message Remote DoS
Vupen: ADV-2009-0667

See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 08/30/2019 21:46
Changes: 03/17/2015 23:38 (86), 08/30/2019 21:46 (3)
Complete: 🔍

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