Digium Asterisk up to 12.5.0 res_pjsip_pubsub input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Digium Asterisk up to 12.5.0. This vulnerability affects the function res_pjsip_pubsub. Such manipulation leads to input validation. This vulnerability is traded as CVE-2014-6609. The attack may be launched remotely. There is no exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Digium Asterisk up to 12.5.0 (Communications System). Affected by this issue is the function res_pjsip_pubsub. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

The res_pjsip_pubsub module in Asterisk Open Source 12.x before 12.5.1 allows remote authenticated users to cause a denial of service (crash) via crafted headers in a SIP SUBSCRIBE request for an event package.

The weakness was shared 09/18/2014 by Mark Michelson with Digium as AST-2014-009 as confirmed advisory (Website). The advisory is shared for download at downloads.asterisk.org. The vendor cooperated in the coordination of the public release. This vulnerability is handled as CVE-2014-6609 since 09/18/2014. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for 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 50 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 77858 (Asterisk PJSIP Channel Driver DoS (AST-2014-009)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc..

Applying a patch is able to eliminate this problem. The bugfix is ready for download at downloads.asterisk.org. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 17213.

The vulnerability is also documented in the databases at X-Force (96072), Tenable (77858), SecurityFocus (BID 69972†), SecurityTracker (ID 1030875†) and Vulnerability Center (SBV-47241†). The entry VDB-67665 is related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

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

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 77858
Nessus Name: Asterisk PJSIP Channel Driver DoS (AST-2014-009)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: downloads.asterisk.org
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

07/30/2014 🔍
09/18/2014 +50 days 🔍
09/18/2014 +0 days 🔍
09/18/2014 +0 days 🔍
09/18/2014 +0 days 🔍
09/18/2014 +0 days 🔍
09/18/2014 +0 days 🔍
09/23/2014 +5 days 🔍
09/25/2014 +2 days 🔍
11/24/2014 +60 days 🔍
11/26/2014 +2 days 🔍
02/20/2022 +2643 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: AST-2014-009
Researcher: Mark Michelson
Organization: Digium
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-6609 (🔍)
GCVE (CVE): GCVE-0-2014-6609
GCVE (VulDB): GCVE-100-67664

IAVM: 🔍

X-Force: 96072 - Asterisk res_pjsip_pubsub denial of service, Medium Risk
SecurityFocus: 69972 - Asterisk Open Source CVE-2014-6609 SIP SUBSCRIBE Request Denial of Service Vulnerability
SecurityTracker: 1030875 - Asterisk SIP SUBSCRIBE Type Handling Flaw Lets Remote Authenticated Users Deny Service
Vulnerability Center: 47241 - Digium Asterisk 12.1.0 Prior to 12.5.1 Remote DoS via a SIP SUBSCRIBE Request, Medium

See also: 🔍

Entryinfo

Created: 09/23/2014 13:08
Updated: 02/20/2022 20:22
Changes: 09/23/2014 13:08 (89), 12/24/2017 09:41 (3), 02/20/2022 20:22 (3)
Complete: 🔍
Cache ID: 216:4DF:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!