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CVE-2018-12227

Published: 12 June 2018

An issue was discovered in Asterisk Open Source 13.x before 13.21.1, 14.x before 14.7.7, and 15.x before 15.4.1 and Certified Asterisk 13.18-cert before 13.18-cert4 and 13.21-cert before 13.21-cert2. When endpoint specific ACL rules block a SIP request, they respond with a 403 forbidden. However, if an endpoint is not identified, then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed endpoints.

Priority

Low

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
asterisk
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Needed

cosmic Not vulnerable
(1:13.22.0~dfsg-2)
disco Not vulnerable
(1:16.2.1~dfsg-1)
eoan Not vulnerable
(1:16.2.1~dfsg-1)
focal Not vulnerable
(1:16.2.1~dfsg-1)
groovy Not vulnerable
(1:16.2.1~dfsg-1)
hirsute Not vulnerable
(1:16.2.1~dfsg-1)
impish Not vulnerable
(1:16.2.1~dfsg-1)
jammy Not vulnerable
(1:16.2.1~dfsg-1)
kinetic Not vulnerable
(1:16.2.1~dfsg-1)
lunar Not vulnerable
(1:16.2.1~dfsg-1)
mantic Not vulnerable
(1:16.2.1~dfsg-1)
noble Not vulnerable
(1:16.2.1~dfsg-1)
trusty Does not exist

upstream
Released (1:13.22.0~dfsg-1, 1:13.14.1~dfsg-2+deb9u4, 1:16.2.1~dfsg-1)
xenial Needed

Patches:
upstream: http://downloads.asterisk.org/pub/security/AST-2018-008.html

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N