CVE-2020-3153 Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path
Local attackers can copy malicious files to system directories with system privileges, enabling DLL hijacking and privilege escalation.
- 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-2020-3153?
CVE-2020-3153 is a medium-severity path traversal vulnerability in Cisco Anyconnect Secure Mobility Client, published on 19 Feb 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 installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges. The vulnerability is due to the incorrect handling of directory paths. An attacker could exploit this vulnerability by creating a malicious file and copying the file to a system directory. An exploit could allow the attacker to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks. To exploit this vulnerability, the attacker needs valid credentials on the Windows system.
Weakness: CWE-427
Which versions are affected by CVE-2020-3153?
It affects 1 product.
Products include Cisco Anyconnect Secure Mobility Client.
How do I fix CVE-2020-3153?
No fix has been published for CVE-2020-3153 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 14 Nov 2022.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2020-3153 being exploited?
Yes. Attackers have exploited CVE-2020-3153 in the wild since at least 24 Oct 2022, including in ransomware campaigns.
Public exploit code: 1 Metasploit module and 3 proofs of concept on GitHub.
Other vulnerabilities in Cisco Anyconnect Secure Mobility Client
Sources
Also known as GHSA-xpxv-rfwh-rcfc.