Digium Asterisk 12.7.0/13.0.0 PJSIP Channel Driver Subscription chan_pjsip input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.6$0-$5k0.00

A vulnerability has been found in Digium Asterisk 12.7.0/13.0.0 (Communications System) and classified as problematic. This vulnerability affects the function chan_pjsip of the component PJSIP Channel Driver Subscription Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability.

The weakness was published 11/20/2014 by Yaron Nahum as AST-2014-015 as confirmed advisory (Website). The advisory is shared for download at downloads.asterisk.org. This vulnerability was named CVE-2014-8415 since 10/22/2014. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 21 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 (98866) and Tenable (79439). Similar entries are available at 68258 and 68261.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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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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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

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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 🔍
10/30/2014 +8 days 🔍
11/20/2014 +21 days 🔍
11/20/2014 +0 days 🔍
11/20/2014 +0 days 🔍
11/21/2014 +1 days 🔍
11/21/2014 +0 days 🔍
11/24/2014 +3 days 🔍
11/24/2014 +0 days 🔍
12/14/2014 +20 days 🔍
02/27/2022 +2632 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: AST-2014-015
Researcher: Yaron Nahum
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-8415 (🔍)
X-Force: 98866 - Asterisk chan_pjsip channel driverdenial of service, Medium Risk
SecurityTracker: 1031248 - Asterisk PJSIP Channel Driver Race Condition Lets Remote Users Deny Service
Vulnerability Center: 47582 - Asterisk Open Source 12.0 - 12.7.0 and 13.0 \x27chan_pjsip\x27 Remote DoS Vulnerability via a Cancel Request for a SIP Session, Medium
SecurityFocus: 71225 - Asterisk Open Source PJSIP Channel Driver Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 11/24/2014 09:33
Updated: 02/27/2022 07:49
Changes: 11/24/2014 09:33 (79), 12/24/2017 09:37 (1), 02/27/2022 07:42 (3), 02/27/2022 07:49 (1)
Complete: 🔍

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