CVE-2018-12227

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.22% Top 25%
Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory asterisk.org Vendor Advisory asterisk.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.debian.org/security/2018/dsa-4320 third party advisory vendor advisory
https://issues.asterisk.org/jira/browse/ASTERISK-27818 patch vendor advisory
http://downloads.asterisk.org/pub/security/AST-2018-008.html vendor advisory
http://www.securityfocus.com/bid/104455 vdb entry third party advisory
https://security.gentoo.org/glsa/201811-11 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-12227?
CVE-2018-12227 has been scored as a medium severity vulnerability.
How to fix CVE-2018-12227?
To fix CVE-2018-12227, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12227 being actively exploited in the wild?
It is possible that CVE-2018-12227 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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