Cisco TelePresence Video Communication Server X8.5.1/X8.5.2 SIP Message 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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Cisco TelePresence Video Communication Server X8.5.1/X8.5.2. This issue affects some unknown processing of the component SIP Message Handler. This manipulation causes input validation. The identification of this vulnerability is CVE-2016-1338. There is no exploit available. It is advisable to implement restrictive firewalling.

Detailsinfo

A vulnerability was found in Cisco TelePresence Video Communication Server X8.5.1/X8.5.2 (Unified Communication Software). It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component SIP Message 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 summary by CVE is:

Cisco TelePresence Video Communication Server (VCS) X8.5.1 and X8.5.2 allows remote authenticated users to cause a denial of service (VoIP outage) via a crafted SIP message, aka Bug ID CSCuu43026.

The weakness was shared 03/12/2016 as CSCuu43026 as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2016-1338 since 01/04/2016. The exploitation appears to be easy. The attack can be launched remotely. A single authentication is required for exploitation. Neither technical details nor an exploit are publicly available.

Proper firewalling of is able to address this issue.

The vulnerability is also documented in the vulnerability database at Vulnerability Center (SBV-57283†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Unified Communication Software

Vendor

Cisco

Name

TelePresence Video Communication Server

Version

License

commercial

Website

Vendor: https://www.cisco.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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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: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

Timelineinfo

01/04/2016 🔍
03/09/2016 +65 days 🔍
03/11/2016 +2 days 🔍
03/12/2016 +1 days 🔍
03/13/2016 +1 days 🔍
03/14/2016 +1 days 🔍
02/01/2019 +1054 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuu43026
Status: Confirmed

CVE: CVE-2016-1338 (🔍)
GCVE (CVE): GCVE-0-2016-1338
GCVE (VulDB): GCVE-100-81349
Vulnerability Center: 57283 - [cisco-sa-20160309-vcs] Cisco TelePresence Video Communication Server Remote DoS via a Crafted SIP Message, Medium

Entryinfo

Created: 03/13/2016 11:54
Updated: 02/01/2019 09:32
Changes: 03/13/2016 11:54 (64), 02/01/2019 09:32 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.