Cisco AnyConnect Secure Mobility Client Denial of Service Vulnerability

A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device. To exploit this vulnerability, the attacker would need to have valid credentials on the device.

The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending one or more crafted IPC messages to the AnyConnect process on an affected device. A successful exploit could allow the attacker to stop the AnyConnect process, causing a DoS condition on the device. 

Note: The process under attack will automatically restart so no action is needed by the user or admin.

There are no workarounds that address this vulnerability.

The vulnerability described in this advisory is still under investigation. Cisco will update this advisory as needed, when additional information becomes available.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dos-55AYyxYr

Security Impact Rating: Medium

CVE: CVE-2021-1450

Source:: Cisco Security Advisories