CVE-2018-12227
asterisk - security update
5.3
MEDIUM
CVSS 3.1
EPSS 1.1%
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.
How to fix CVE-2018-12227
To remediate CVE-2018-12227, upgrade the affected package to a fixed version below.
- —upgrade to 1:13.22.0~dfsg-1 or later
- —upgrade to 1:13.14.1~dfsg-2+deb9u4 or later
Is CVE-2018-12227 being exploited?
Low — EPSS is 1.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1:13.22.0~dfsg-1
- from 0, < 1:13.14.1~dfsg-2+deb9u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |