UBUNTU-CVE-2018-12227

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    UBUNTU-CVE-2018-12227

    Published: 12 Jun 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-12227

    Summary:

    Details: 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: https://ubuntu.com/security/CVE-2018-12227, http://downloads.asterisk.org/pub/security/AST-2018-008.html, https://issues.asterisk.org/jira/browse/ASTERISK-27818, https://www.cve.org/CVERecord?id=CVE-2018-12227

    Affected packages

    Package

    Name: asterisk

    Purl: pkg:deb/ubuntu/asterisk@1:13.1.0~dfsg-1.1ubuntu4.1+esm1?arch=source&distro=esm-apps/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1:13.1.0~dfsg-1.1ubuntu3
    1:13.1.0~dfsg-1.1ubuntu4
    1:13.1.0~dfsg-1.1ubuntu4.1
    1:13.1.0~dfsg-1.1ubuntu4.1+esm1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High