7.8
High
Exploited
· ransomware
CVE-2020-3433 Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Known to be used
Weakness
CWE-427
Description
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco AnyConnect Secure Mobility Client | Versions not published |
References
- 20200805 Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability tools.cisco.com
- packetstormsecurity.com packetstormsecurity.com
Timeline
- Published
- Added to the KEV catalogue
- Last modified
Other CVEs of Cisco AnyConnect Secure Mobility Client
The 23 CVEs of Cisco AnyConnect Secure Mobility Client →
CVE-2021-40124
A vulnerability in the Network Access Manager (NAM) module of Cisco AnyConnect Secure Mobility Client for Windows…
6.7
Medium
CVE-2021-34788
A vulnerability in the shared library loading mechanism of Cisco AnyConnect Secure Mobility Client for Linux and Mac…
7.0
High
CVE-2021-1567
A vulnerability in the DLL loading mechanism of Cisco AnyConnect Secure Mobility Client for Windows could allow an…
7.0
High
CVE-2021-1568
A vulnerability in Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to…
5.5
Medium