Digium Asterisk 12.7.0/13.0.0 PJSIP ACL res_pjsip_acl access control
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.6 | $0-$5k | 0.00 |
A vulnerability, which was classified as critical, has been found in Digium Asterisk 12.7.0/13.0.0 (Communications System). Affected by this issue is the function res_pjsip_acl
of the component PJSIP ACL Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is integrity. CVE summarizes:
The res_pjsip_acl module in Asterisk Open Source 12.x before 12.7.1 and 13.x before 13.0.1 does properly create and load ACLs defined in pjsip.conf at startup, which allows remote attackers to bypass intended PJSIP ACL rules.
The weakness was presented 11/20/2014 by Jonathan Rose as AST-2014-013 as confirmed advisory (Website). The advisory is available at downloads.asterisk.org. This vulnerability is handled as CVE-2014-8413 since 10/22/2014. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.
The vulnerability was handled as a non-public zero-day exploit for at least 23 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 79439 (Asterisk PJSIP Multiple Vulnerabilities (AST-2014-013 / AST-2014-015 / AST-2014-016)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc..
Upgrading to version 12.7.1 or 13.0.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the databases at X-Force (98864) and Tenable (79439). See 68260 and 68261 for similar entries.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 4.6
VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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Exploiting
Class: Access controlCWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Unproven
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Nessus ID: 79439
Nessus Name: Asterisk PJSIP Multiple Vulnerabilities (AST-2014-013 / AST-2014-015 / AST-2014-016)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
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Upgrade: Asterisk 12.7.1/13.0.1
Timeline
10/22/2014 🔍10/28/2014 🔍
11/20/2014 🔍
11/20/2014 🔍
11/20/2014 🔍
11/20/2014 🔍
11/21/2014 🔍
11/24/2014 🔍
11/24/2014 🔍
11/25/2014 🔍
12/14/2014 🔍
02/27/2022 🔍
Sources
Vendor: digium.comAdvisory: AST-2014-013
Researcher: Jonathan Rose
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2014-8413 (🔍)
X-Force: 98864 - Asterisk res_pjsip_acl security bypass, Medium Risk
SecurityTracker: 1031246 - Asterisk PJSIP ACL Bug Lets Remote Users Bypass Access Controls
Vulnerability Center: 47581 - Asterisk Open Source 12.0 - 12.7.0 and 13.0 \x27res_pjsip_acl\x27 Remote Restrictions Bypass Vulnerability, Medium
SecurityFocus: 71221 - Asterisk Open Source 'res_pjsip_acl' Module Security Bypass Vulnerability
See also: 🔍
Entry
Created: 11/24/2014 09:29Updated: 02/27/2022 07:25
Changes: 11/24/2014 09:29 (82), 12/24/2017 09:37 (1), 02/27/2022 07:25 (2)
Complete: 🔍
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