CVE-2014-4045

Asterisk Project Security Advisory - AST-2014-005

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Publish/Subscribe Framework in the PJSIP channel driver in Asterisk Open Source 12.x before 12.3.1, when sub_min_expiry is set to zero, allows remote attackers to cause a denial of service (assertion failure and crash) via an unsubscribe request when not subscribed to the device.

El Framework Publish/Subscribe en el controlador de canales PJSIP en Asterisk Open Source 12.x anterior a 12.3.1, cuando sub_min_expiry esté configurado a cero, permite a atacantes remotos causar una denegación de servicio (fallo de aserción y caída) a través de una solicitud UNSUBSCRIBE cuando no está suscrito al dispositivo.

A remotely exploitable crash vulnerability exists in the PJSIP channel driver's pub/sub framework. If an attempt is made to unsubscribe when not currently subscribed and the endpoint's "sub_min_expiry" is set to zero, Asterisk tries to create an expiration timer with zero seconds, which is not allowed, so an assertion raised.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-06-12 CVE Reserved
2014-06-13 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-189: Numeric Errors

CAPEC

References (3)

URL	Tag	Source
http://packetstormsecurity.com/files/127087/Asterisk-Project-Security-Advisory-AST-2014-005.html	X_refsource_misc
http://www.securityfocus.com/archive/1/532414/100/0/threaded	Mailing List

URL	Date	SRC

URL	Date	SRC
http://downloads.asterisk.org/pub/security/AST-2014-005.html	2018-10-09

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.0.0 Search vendor "Digium" for product "Asterisk" and version "12.0.0"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.1.0 Search vendor "Digium" for product "Asterisk" and version "12.1.0"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.1.0 Search vendor "Digium" for product "Asterisk" and version "12.1.0"		rc1		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.1.0 Search vendor "Digium" for product "Asterisk" and version "12.1.0"		rc2		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.1.0 Search vendor "Digium" for product "Asterisk" and version "12.1.0"		rc3		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.1.1 Search vendor "Digium" for product "Asterisk" and version "12.1.1"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.2.0 Search vendor "Digium" for product "Asterisk" and version "12.2.0"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.2.0 Search vendor "Digium" for product "Asterisk" and version "12.2.0"		rc1		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.2.0 Search vendor "Digium" for product "Asterisk" and version "12.2.0"		rc2		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.2.0 Search vendor "Digium" for product "Asterisk" and version "12.2.0"		rc3		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.3.0 Search vendor "Digium" for product "Asterisk" and version "12.3.0"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.3.0 Search vendor "Digium" for product "Asterisk" and version "12.3.0"		rc1		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				12.3.0 Search vendor "Digium" for product "Asterisk" and version "12.3.0"		rc2		Affected