Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2011-2529

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
06/07/2011
Last modified:
11/04/2025

Description

chan_sip.c in the SIP channel driver in Asterisk Open Source 1.6.x before 1.6.2.18.1 and 1.8.x before 1.8.4.3 does not properly handle '\0' characters in SIP packets, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted packet.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:digium:asterisk:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta5:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta6:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta7:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta7.1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta8:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:beta9:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:rc4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:rc5:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0:rc6:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.0.1:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools