CVE-2023-20178

Published Jun 28, 2023 CVSS 3.1 · 7.8 High EPSS 5.4% KEV · Not listed

Description

A vulnerability in the client update process of Cisco AnyConnect Secure Mobility Client Software for Windows and Cisco Secure Client Software for Windows could allow a low-privileged, authenticated, local attacker to elevate privileges to those of SYSTEM. The client update process is executed after a successful VPN connection is established.

This vulnerability exists because improper permissions are assigned to a temporary directory that is created during the update process. An attacker could exploit this vulnerability by abusing a specific function of the Windows installer process. A successful exploit could allow the attacker to execute code with SYSTEM privileges.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco Secure Client

affected

Version	Status	Constraints
`4.9.00086`	affected	—
`4.9.01095`	affected	—
`4.9.02028`	affected	—
`4.9.03047`	affected	—
`4.9.03049`	affected	—
`4.9.04043`	affected	—
`4.9.04053`	affected	—
`4.9.05042`	affected	—
`4.9.06037`	affected	—
`4.10.00093`	affected	—
`4.10.01075`	affected	—
`4.10.02086`	affected	—
`4.10.03104`	affected	—
`4.10.04065`	affected	—
`4.10.04071`	affected	—
`4.10.05085`	affected	—
`4.10.05095`	affected	—
`4.10.05111`	affected	—
`4.10.06079`	affected	—
`4.10.06090`	affected	—
`5.0.00238`	affected	—
`5.0.00529`	affected	—
`5.0.00556`	affected	—
`5.0.01242`	affected	—