CWE
789
Advisory Published

cisco-sa-anyconnect-dos-hMhyDfb8: Cisco AnyConnect Secure Mobility Client for Windows Denial of Service Vulnerability

First published: Wed Jun 16 2021(Updated: )

A vulnerability in Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected system. This vulnerability is due to uncontrolled memory allocation. An attacker could exploit this vulnerability by copying a crafted file to a specific folder on the system. A successful exploit could allow the attacker to crash the VPN Agent service when the affected application is launched, causing it to be unavailable to all users of the system. To exploit this vulnerability, the attacker must have valid credentials on a multiuser Windows system. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dos-hMhyDfb8

Credit: Skylake.

Affected SoftwareAffected VersionHow to fix
Cisco AnyConnect Secure Mobility Client

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of cisco-sa-anyconnect-dos-hMhyDfb8?

    The cisco-sa-anyconnect-dos-hMhyDfb8 vulnerability is considered a critical denial of service (DoS) issue.

  • How do I fix cisco-sa-anyconnect-dos-hMhyDfb8?

    To remediate cisco-sa-anyconnect-dos-hMhyDfb8, update the Cisco AnyConnect Secure Mobility Client to the latest version provided by Cisco.

  • Who can exploit cisco-sa-anyconnect-dos-hMhyDfb8?

    The cisco-sa-anyconnect-dos-hMhyDfb8 vulnerability can be exploited by an authenticated local attacker.

  • What causes cisco-sa-anyconnect-dos-hMhyDfb8?

    The cisco-sa-anyconnect-dos-hMhyDfb8 vulnerability is caused by uncontrolled memory allocation in the Cisco AnyConnect Secure Mobility Client.

  • What systems are affected by cisco-sa-anyconnect-dos-hMhyDfb8?

    The cisco-sa-anyconnect-dos-hMhyDfb8 vulnerability affects systems running the Cisco AnyConnect Secure Mobility Client for Windows.

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