Detections
Analytics
Asterisk Invalid INVITE / REGISTER SIP Request Username Enumeration (AST-2011-011)
medium Nessus Plugin ID 56921
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Synopsis
A telephony application running on the remote host is affected by an information disclosure vulnerability.Description
According to the version in its SIP banner, the version of Asterisk running on the remote host allows a remote attacker to enumerate valid users by sending malformed SIP INVITE and REGISTER requests.Solution
Update to Asterisk 1.4.41.2 / 1.6.2.18.2 / 1.8.4.4 / C.3.7.3 or later.See Also
http://downloads.asterisk.org/pub/security/AST-2011-011.html
Plugin Details
Severity: Medium
ID: 56921
File Name: asterisk_ast_2011_011.nasl
Version: 1.16
Type: remote
Family: Misc.
Published: 11/22/2011
Updated: 4/11/2022
Configuration: Enable paranoid mode, Enable thorough checks
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.4
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Vulnerability Information
CPE: cpe:/a:digium:asterisk
Required KB Items: Settings/ParanoidReport, asterisk/sip_detected
Exploit Ease: No known exploits are available
Patch Publication Date: 6/28/2011
Vulnerability Publication Date: 6/28/2011
Reference Information
CVE: CVE-2011-2536, CVE-2011-2666