Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2009-0871

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.

Security Impact Summary

CVE-2009-0871 is a security vulnerability that . Impacting 1 product from digium organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2009-03-11T14:19:15.420

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 3.5 (LOW)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

6.8

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	digium	asterisk	1.4.22	Yes
Application	digium	asterisk	1.4.23	Yes
Application	digium	asterisk	1.4.23.1	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0	Yes
Application	digium	asterisk	1.6.0.1	Yes
Application	digium	asterisk	1.6.0.2	Yes
Application	digium	asterisk	1.6.0.3	Yes
Application	digium	asterisk	1.6.0.3	Yes
Application	digium	asterisk	1.6.0.4	Yes
Application	digium	asterisk	1.6.0.5	Yes
Application	digium	asterisk	1.6.1	Yes
Application	digium	asterisk	1.6.1	Yes
Application	digium	asterisk	1.6.1	Yes
Application	digium	asterisk	1.6.1	Yes
Application	digium	asterisk	1.6.1	Yes
Application	digium	asterisk	1.6.1	Yes
Application	digium	asterisk	c.2.3	Yes

References

http://bugs.digium.com/view.php?id=13547 ([email protected])
http://bugs.digium.com/view.php?id=14417 ([email protected])
http://downloads.digium.com/pub/security/AST-2009-002.html Patch, Vendor Advisory ([email protected])
http://osvdb.org/52568 ([email protected])
http://secunia.com/advisories/34229 Vendor Advisory ([email protected])
http://www.securityfocus.com/archive/1/501656/100/0/threaded ([email protected])
http://www.securityfocus.com/bid/34070 Patch ([email protected])
http://www.securitytracker.com/id?1021834 ([email protected])
http://www.vupen.com/english/advisories/2009/0667 ([email protected])
http://bugs.digium.com/view.php?id=13547 (af854a3a-2127-422b-91ae-364da2661108)
http://bugs.digium.com/view.php?id=14417 (af854a3a-2127-422b-91ae-364da2661108)
http://downloads.digium.com/pub/security/AST-2009-002.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://osvdb.org/52568 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34229 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/501656/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/34070 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1021834 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/0667 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For digium's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.