Description
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.
References (5)
Core 5
Core References
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2018/dsa-4320
Patch, Vendor Advisory x_refsource_confirm
https://issues.asterisk.org/jira/browse/ASTERISK-27818
Vendor Advisory x_refsource_confirm
http://downloads.asterisk.org/pub/security/AST-2018-008.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/104455
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201811-11
Scores
CVSS v3
5.3
EPSS
0.0353
EPSS Percentile
87.8%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Details
CWE
CWE-200
Status
published
Products (4)
debian/debian_linux
9.0
digium/asterisk
13.0.0 - 13.21.1
digium/certified_asterisk
13.18 cert1 (3 CPE variants)
digium/certified_asterisk
13.21 cert1
Published
Jun 12, 2018
Tracked Since
Feb 18, 2026