CVE-2020-3433 Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking
Local authenticated attackers can execute arbitrary code with SYSTEM privileges via DLL hijacking in Cisco AnyConnect Secure Mobility Client for Windows.
- Exploited in the wild
- Since 24 Oct 2022
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-3433?
CVE-2020-3433 is a high-severity vulnerability in Cisco Anyconnect Secure Mobility Client, published on 17 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-427
Which versions are affected by CVE-2020-3433?
It affects 1 product.
Products include Cisco Anyconnect Secure Mobility Client.
How do I fix CVE-2020-3433?
No fix has been published for CVE-2020-3433 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 14 Nov 2022.
Is CVE-2020-3433 being exploited?
Yes. Attackers have exploited CVE-2020-3433 in the wild since at least 24 Oct 2022, including in ransomware campaigns.
Public exploit code: 1 Metasploit module and 1 proofs of concept on GitHub.
Other vulnerabilities in Cisco Anyconnect Secure Mobility Client
Sources
Also known as GHSA-v63m-wv25-vhmp.