CVE-2019-1721

Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service Vulnerability

Description

A vulnerability in the phone book feature of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to cause the CPU to increase to 100% utilization, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to improper handling of the XML input. An attacker could exploit this vulnerability by sending a Session Initiation Protocol (SIP) message with a crafted XML payload to an affected device. A successful exploit could allow the attacker to exhaust CPU resources, resulting in a DoS condition. Manual intervention may be required to recover the device. This vulnerability is fixed in Cisco Expressway Series and Cisco TelePresence Video Communication Server Releases X12.5.1 and later.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.46%
Vendor Advisory cisco.com
Affected: Cisco Cisco TelePresence Video Communication Server (VCS)
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-es-tvcs-dos vendor advisory
http://www.securityfocus.com/bid/108016 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-1721?
CVE-2019-1721 has been scored as a medium severity vulnerability.
How to fix CVE-2019-1721?
To fix CVE-2019-1721, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-1721 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-1721 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-1721?
CVE-2019-1721 affects Cisco Cisco TelePresence Video Communication Server (VCS).
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