CWE
20
Advisory Published
Updated

CVE-2019-1720: Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service Vulnerability

First published: Thu Apr 18 2019(Updated: )

A vulnerability in the XML API 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 specifically crafted XML payload. A successful exploit could allow the attacker to exhaust CPU resources, resulting in a DoS condition until the system is manually rebooted. Software versions prior to X12.5.1 are affected.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco TelePresence Video Communication Server<x12.5.1
<x12.5.1

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Frequently Asked Questions

  • What is CVE-2019-1720?

    CVE-2019-1720 is a vulnerability in the XML API of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) that allows an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected system.

  • What is the severity of CVE-2019-1720?

    The severity of CVE-2019-1720 is medium with a CVSS score of 4.9.

  • How does CVE-2019-1720 affect Cisco TelePresence Video Communication Server?

    CVE-2019-1720 affects Cisco TelePresence Video Communication Server by causing the CPU to increase to 100% utilization, resulting in a DoS condition.

  • Is there a fix for CVE-2019-1720?

    Yes, Cisco has released a security advisory with mitigation details and software updates to address the vulnerability. Please refer to the Cisco Security Advisory for specific instructions.

  • Where can I find more information about CVE-2019-1720?

    You can find more information about CVE-2019-1720 in the SecurityFocus and Cisco Security Advisory links provided.

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