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mercredi 17 avril 2019

Cisco up to X12.5.0 Phone Book SIP Message CPU Exhaustion denial of service

A vulnerability classified as problematic was found in Cisco Expressway and TelePresence Video Communication Server up to X12.5.0 (Unified Communication Software). Affected by this vulnerability is the functionality of the component Phone Book. The manipulation as part of a SIP Message leads to a denial of service vulnerability (CPU Exhaustion). The CWE definition for the vulnerability is CWE-400. As an impact it is known to affect availability.

The weakness was published 04/18/2019 as cisco-sa-20190417-es-tvcs-dos as confirmed advisory (Website). It is possible to read the advisory at This vulnerability is known as CVE-2019-1721. The attack can be launched remotely. The successful exploitation requires a single authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/18/2019).

Upgrading to version X12.5.1 eliminates this vulnerability.

Similar entries are available at 133794 and 133796.




CPE 2.3

CPE 2.2


VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍


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


Class: Denial of service / CPU Exhaustion (CWE-400)
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

Threat Intelligence

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍


Recommended: Upgrade
Status: 🔍
0-Day Time: 🔒

Upgrade: Expressway/TelePresence Video Communication Server X12.5.1


04/18/2019 Advisory disclosed
04/18/2019 VulDB entry created
04/18/2019 VulDB last update


Advisory: cisco-sa-20190417-es-tvcs-dos
Status: Confirmed

CVE: CVE-2019-1721 (🔒)
See also: 🔒


Created: 04/18/2019 08:16 PM
Complete: 🔍

Lien vers l'article source

Auteur: VulDB

Catégories: VulDBNombre de vues: 170


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