CVE-2020-3435 Cisco AnyConnect Secure Mobility Client for Windows Profile Modification Vulnerability
A local authenticated attacker can modify VPN profile files via insufficient IPC validation in Cisco AnyConnect for Windows.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-3435?
CVE-2020-3435 is a medium-severity missing authorization 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 overwrite VPN profiles on an affected device. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process on an affected device. A successful exploit could allow the attacker to modify VPN profile files. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.
Weakness: CWE-20
Which versions are affected by CVE-2020-3435?
It affects 1 product.
Products include Cisco Anyconnect Secure Mobility Client.
How do I fix CVE-2020-3435?
No fix has been published for CVE-2020-3435 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2020-3435 being exploited?
There is no known exploitation of CVE-2020-3435 in the wild and no public exploit code.
Other vulnerabilities in Cisco Anyconnect Secure Mobility Client
Sources
Also known as GHSA-f4qg-m5r8-999r.