Detections
Analytics
Asterisk Multiple Channel Drivers Denial of Service (AST-2011-008 / AST-2011-009 / AST-2011-010)
medium Nessus Plugin ID 55457
Language:
Synopsis
A telephony application running on the remote host is affected by multiple denial of service vulnerabilities.Description
According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by multiple denial of service vulnerabilities :- If a remote user sends a SIP packet with a NULL, Asterisk reads data past the NULL even though the buffer is actually truncated when copied, which could lead to an application crash. (AST-2011-008)
- A remote user sending a SIP packet containing a Contact header with a missing left angle bracket causes Asterisk to access a NULL pointer, which could cause the application to crash. (AST-2011-009)
- A memory address can be inadvertently transmitted over the network via IAX2 via an option control frame, which would cause the remote party to try to access it.
(AST-2011-010)
Solution
Upgrade to Asterisk 1.4.41.1, 1.6.2.18.1, 1.8.4.3, C.3.7.3 or later.See Also
http://downloads.asterisk.org/pub/security/AST-2011-010.html
http://downloads.asterisk.org/pub/security/AST-2011-008.html
http://downloads.asterisk.org/pub/security/AST-2011-009.html
Plugin Details
Severity: Medium
ID: 55457
File Name: asterisk_ast_2011_010.nasl
Version: 1.17
Type: remote
Family: Denial of Service
Published: 6/29/2011
Updated: 4/11/2022
Configuration: Enable paranoid mode, Enable thorough checks
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 4
Temporal Score: 3
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P
Vulnerability Information
CPE: cpe:/a:digium:asterisk
Required KB Items: asterisk/sip_detected, Settings/ParanoidReport
Exploit Ease: No known exploits are available
Patch Publication Date: 6/20/2011
Vulnerability Publication Date: 6/20/2011
Reference Information
CVE: CVE-2011-2529, CVE-2011-2535, CVE-2011-2665
BID: 48431