National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-12227 Detail

Current 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.

Source:  MITRE
Description Last Modified:  06/12/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.3 MEDIUM
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N (V3 legend)
Impact Score: 1.4
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://downloads.asterisk.org/pub/security/AST-2018-008.html Vendor Advisory
http://www.securityfocus.com/bid/104455 Third Party Advisory VDB Entry
https://issues.asterisk.org/jira/browse/ASTERISK-27818 Patch Vendor Advisory
https://www.debian.org/security/2018/dsa-4320

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-12227
NVD Published Date:
06/12/2018
NVD Last Modified:
10/17/2018