Digium Asterisk 12.7.0/13.0.0 PJSIP ACL res_pjsip_acl access control

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Digium Asterisk 12.7.0/13.0.0. This vulnerability affects the function res_pjsip_acl of the component PJSIP ACL Handler. Such manipulation leads to access control. This vulnerability is listed as CVE-2014-8413. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

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), Tenable (79439), SecurityFocus (BID 71221†), SecurityTracker (ID 1031246†) and Vulnerability Center (SBV-47581†). See VDB-68260 and VDB-68261 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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 Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Asterisk 12.7.1/13.0.1

Timelineinfo

10/22/2014 🔍
10/28/2014 +6 days 🔍
11/20/2014 +23 days 🔍
11/20/2014 +0 days 🔍
11/20/2014 +0 days 🔍
11/20/2014 +0 days 🔍
11/21/2014 +1 days 🔍
11/24/2014 +3 days 🔍
11/24/2014 +0 days 🔍
11/25/2014 +1 days 🔍
12/14/2014 +19 days 🔍
02/27/2022 +2632 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: AST-2014-013
Researcher: Jonathan Rose
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-8413 (🔍)
GCVE (CVE): GCVE-0-2014-8413
GCVE (VulDB): GCVE-100-68258
X-Force: 98864 - Asterisk res_pjsip_acl security bypass, Medium Risk
SecurityFocus: 71221 - Asterisk Open Source 'res_pjsip_acl' Module Security Bypass Vulnerability
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

See also: 🔍

Entryinfo

Created: 11/24/2014 09:29
Updated: 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: 🔍
Cache ID: 216:5EC:103

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