CVE-2018-12227

MEDIUM

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

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

http://www.securityfocus.com/bid/104455

https://issues.asterisk.org/jira/browse/ASTERISK-27818

https://security.gentoo.org/glsa/201811-11

https://www.debian.org/security/2018/dsa-4320

Details

Source: MITRE

Published: 2018-06-12

Updated: 2019-03-29

Type: CWE-200

Risk Information

CVSS v2.0

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM