CVE-2021-1567

Published Jun 16, 2021

Last updated a year ago

Overview

Description
A vulnerability in the DLL loading mechanism of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device if the VPN Posture (HostScan) Module is installed on the AnyConnect client. This vulnerability is due to a race condition in the signature verification process for DLL files that are loaded on an affected device. An attacker could exploit this vulnerability by sending a series of crafted interprocess communication (IPC) messages to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system.
Source
ykramarz@cisco.com
NVD status
Modified

Risk scores

CVSS 3.1

Type
Primary
Base score
6.7
Impact score
5.9
Exploitability score
0.8
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Severity
MEDIUM

CVSS 2.0

Type
Primary
Base score
6.2
Impact score
10
Exploitability score
1.9
Vector string
AV:L/AC:H/Au:N/C:C/I:C/A:C

Weaknesses

nvd@nist.gov
CWE-427
ykramarz@cisco.com
CWE-367

Social media

Hype score
Not currently trending

Configurations