CVE-2009-0871

3.5 · LOW

Published Mar 11, 2009digiumCWE-20EPSS 2.57%AV:N/AC:M/Au:S/C:N/I:N/A:P

Overview

CVE-2009-0871 is a low-severity vulnerability affecting digium asterisk. It was published on March 11, 2009 and has a CVSS 2.0 base score of 3.5 (LOW).

This vulnerability has a CVSS 2.0 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from digium. Update asterisk to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

Vendor	Product	Versions	Status

References

Refbugs.digium.com/view.php?id=13547 Refbugs.digium.com/view.php?id=14417 Refdownloads.digium.com/pub/security/AST-2009-002.html Refosvdb.org/52568 Refsecunia.com/advisories/34229 Refwww.securityfocus.com/archive/1/501656/100/0/threaded Refwww.securityfocus.com/bid/34070 Refwww.securitytracker.com/id?1021834 Refwww.vupen.com/english/advisories/2009/0667 Refbugs.digium.com/view.php?id=13547

How CyberStrike helps

Frequently asked questions

What is CVE-2009-0871?

CVE-2009-0871 is a low-severity vulnerability affecting digium asterisk. It was published on March 11, 2009 and has a CVSS 2.0 base score of 3.5 (LOW).

How severe is CVE-2009-0871?

This vulnerability has a CVSS 2.0 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2009-0871?

How can CyberStrike help with CVE-2009-0871?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-0871 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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CVE-2009-0871

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