CVE-2018-12227 Information disclosure in n/a

What is CVE-2018-12227?

CVE-2018-12227 is a medium-severity vulnerability in Debian Debian Linux, published on 12 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-200

Which versions are affected by CVE-2018-12227?

It affects 3 products.

Products include Debian Debian Linux, Digium Asterisk, Digium Certified Asterisk.

How do I fix CVE-2018-12227?

Upgrade to a fixed version.

Is CVE-2018-12227 being exploited?

There is no known exploitation of CVE-2018-12227 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-12227, GHSA-cvxq-f65j-c34v, UBUNTU-CVE-2018-12227.