Digium Asterisk 12.0.0 INIVITE Request input validation

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

Summaryinfo

A vulnerability described as problematic has been identified in Digium Asterisk 12.0.0. Affected by this issue is some unknown functionality. Executing a manipulation of the argument INIVITE Request can lead to input validation. This vulnerability is registered as CVE-2014-2287. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Digium Asterisk 12.0.0 (Communications System) and classified as problematic. This vulnerability affects an unknown code block. The manipulation of the argument INIVITE Request 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. CVE summarizes:

channels/chan_sip.c in Asterisk Open Source 1.8.x before 1.8.26.1, 11.8.x before 11.8.1, and 12.1.x before 12.1.1, and Certified Asterisk 1.8.15 before 1.8.15-cert5 and 11.6 before 11.6-cert2, when chan_sip has a certain configuration, allows remote authenticated users to cause a denial of service (channel and file descriptor consumption) via an INVITE request with a (1) Session-Expires or (2) Min-SE header with a malformed or invalid value.

The weakness was published 03/10/2014 by Corey Farrell with Core as AST-2014-002 as confirmed advisory (Website). The advisory is shared for download at downloads.asterisk.org. The public release has been coordinated with the vendor. This vulnerability was named CVE-2014-2287 since 03/05/2014. 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 13 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 73020 (Asterisk SIP File Descriptor Exhaustion with chan_sip Session-Timers DoS (AST-2014-002)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc..

Upgrading to version 12.1.0 eliminates this vulnerability. The upgrade is hosted 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 16302.

The vulnerability is also documented in the databases at X-Force (91828), Tenable (73020), SecurityFocus (BID 66094†), Secunia (SA57354†) and Vulnerability Center (SBV-43908†). Similar entries are available at VDB-12638, VDB-12639 and VDB-12641. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 🔍
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: 🔍

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Nessus ID: 73020
Nessus Name: Asterisk SIP File Descriptor Exhaustion with chan_sip Session-Timers DoS (AST-2014-002)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867628
OpenVAS Name: Fedora Update for asterisk FEDORA-2014-3762
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Asterisk 12.1.0
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

02/25/2014 🔍
03/05/2014 +8 days 🔍
03/10/2014 +5 days 🔍
03/10/2014 +0 days 🔍
03/10/2014 +0 days 🔍
03/11/2014 +1 days 🔍
03/13/2014 +2 days 🔍
03/14/2014 +1 days 🔍
03/18/2014 +4 days 🔍
04/07/2014 +20 days 🔍
04/18/2014 +11 days 🔍
06/15/2021 +2615 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: AST-2014-002
Researcher: Corey Farrell
Organization: Core
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-2287 (🔍)
GCVE (CVE): GCVE-0-2014-2287
GCVE (VulDB): GCVE-100-12640

IAVM: 🔍

X-Force: 91828 - Asterisk SIP INVITE denial of service, Medium Risk
SecurityFocus: 66094 - Multiple Asterisk Products CVE-2014-2287 Denial of Service Vulnerability
Secunia: 57354 - Asterisk Multiple Denial of Service Vulnerabilities, Moderately Critical
Vulnerability Center: 43908 - Digium Asterisk Open Source and Certified Remote DoS via File Descriptor with chan_sip Session-Timers, Medium

See also: 🔍

Entryinfo

Created: 03/18/2014 10:12
Updated: 06/15/2021 17:57
Changes: 03/18/2014 10:12 (92), 05/24/2017 11:05 (5), 06/15/2021 17:57 (3)
Complete: 🔍
Cache ID: 216:033:103

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

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