Asterisk SIP Channel Driver Username Disclosure (AST-2013-003)

Medium Nessus Plugin ID 65898

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 is potentially affected by a username disclosure vulnerability related to INVITE, SUBSCRIBE and REGISTER transactions and improper settings for the configuration options 'alwaysauthreject', 'allowguest' and 'autocreatepeer'.

Solution

Upgrade to Asterisk 1.8.20.2 / 10.12.2 / 11.2.2 / Certified Asterisk 1.8.15-cert2 / Asterisk Business Edition C.3.8.1, or apply the appropriate patch listed in the Asterisk advisory.

See Also

http://downloads.asterisk.org/pub/security/AST-2013-003.html

https://issues.asterisk.org/jira/browse/ASTERISK-21013

Plugin Details

Severity: Medium

ID: 65898

File Name: asterisk_ast_2013_003.nasl

Version: 1.10

Type: remote

Family: Misc.

Published: 2013/04/10

Updated: 2018/06/27

Dependencies: 63202

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: asterisk/sip_detected, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2013/03/27

Vulnerability Publication Date: 2013/02/21

Reference Information

CVE: CVE-2013-2264

BID: 58764