Digium Asterisk 1.8.28.0/1.8.32.0/11.6.0/11.14.0/12.7.0 DB Dialplan Function access control
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.5 | $0-$5k | 0.00 |
Summary
A vulnerability classified as critical has been found in Digium Asterisk 1.8.28.0/1.8.32.0/11.6.0/11.14.0/12.7.0. This affects an unknown function of the component DB Dialplan Function. This manipulation causes access control. This vulnerability appears as CVE-2014-8418. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.
Details
A vulnerability was found in Digium Asterisk 1.8.28.0/1.8.32.0/11.6.0/11.14.0/12.7.0 (Communications System). It has been declared as critical. Affected by this vulnerability is some unknown processing of the component DB Dialplan Function. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability.
The weakness was presented 11/20/2014 by Gareth Palmer as AST-2014-018 as confirmed advisory (Website). It is possible to read the advisory at downloads.asterisk.org. This vulnerability is known as CVE-2014-8418 since 10/22/2014. The exploitation appears to be easy. The attack can be launched remotely. Required for exploitation is a single authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. The advisory points out:
The DB dialplan function when executed from an external protocol (for instance AMI), could result in a privilege escalation.
The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 79438 (Asterisk Multiple Vulnerabilities (AST-2014-012 / AST-2014-018)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc..
Upgrading to version 1.8.32.1, 11.14.1, 12.7.1 or 13.0.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:
Asterisk now inhibits the DB function from being executed from an external interface if the live_dangerously option is set to no.
The vulnerability is also documented in the databases at X-Force (98869), Tenable (79438), SecurityFocus (BID 71227†), SecurityTracker (ID 1031251†) and Vulnerability Center (SBV-47477†). See VDB-68262, VDB-68261, VDB-68260 and VDB-68259 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.digium.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.3VulDB Meta Temp Score: 5.5
VulDB Base Score: 6.3
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Access controlCWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Unproven
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 79438
Nessus Name: Asterisk Multiple Vulnerabilities (AST-2014-012 / AST-2014-018)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
OpenVAS ID: 18627
OpenVAS Name: Gentoo Linux Local Check: https://security.gentoo.org/glsa/201412-51
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Asterisk 1.8.32.1/11.14.1/12.7.1/13.0.1
Timeline
10/22/2014 🔍11/17/2014 🔍
11/17/2014 🔍
11/17/2014 🔍
11/20/2014 🔍
11/20/2014 🔍
11/21/2014 🔍
11/24/2014 🔍
11/24/2014 🔍
12/09/2014 🔍
02/27/2022 🔍
Sources
Vendor: digium.comAdvisory: AST-2014-018
Researcher: Gareth Palmer
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2014-8418 (🔍)
GCVE (CVE): GCVE-0-2014-8418
GCVE (VulDB): GCVE-100-68263
X-Force: 98869 - Asterisk DB dialplan function privilege escalation, Medium Risk
SecurityFocus: 71227 - Multiple Asterisk Products 'funcs/func_db.c' Remote Privilege Escalation Vulnerability
SecurityTracker: 1031251 - Asterisk DB Dialplan Function Lets Remote Authenticated Users Gain Elevated Privileges
Vulnerability Center: 47477 - Asterisk Open Source and Certified Asterisk Remote Host Privileges via a Call From an External Protocol, High
See also: 🔍
Entry
Created: 11/24/2014 09:38Updated: 02/27/2022 08:11
Changes: 11/24/2014 09:38 (73), 12/24/2017 09:37 (13), 02/27/2022 08:09 (3), 02/27/2022 08:11 (1)
Complete: 🔍
Cache ID: 216:3A0:103
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