CVE-2021-1386 Path traversal in Cisco AMP for Endpoints

High 7.0 Published 8 Apr 2021 Updated 8 Nov 2024

Local attackers can execute arbitrary code with SYSTEM privileges via DLL hijacking in Cisco AMP, ClamAV, and Immunet due to insufficient path validation.

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-2021-1386?

CVE-2021-1386 is a high-severity path traversal vulnerability in Cisco AMP for Endpoints, published on 8 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the dynamic link library (DLL) loading mechanism in Cisco Advanced Malware Protection (AMP) for Endpoints Windows Connector, ClamAV for Windows, and Immunet could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected Windows system. To exploit this vulnerability, the attacker would need valid credentials on the system. The vulnerability is due to insufficient validation of directory search paths at run time. An attacker could exploit this vulnerability by placing a malicious DLL file on an affected system. A successful exploit could allow the attacker to execute arbitrary code with SYSTEM privileges.

Weakness: CWE-427

Which versions are affected by CVE-2021-1386?

It affects 3 products.

Products include Cisco Advanced Malware Protection for Endpoints, Cisco Clamav, Cisco Immunet.

How do I fix CVE-2021-1386?

No fix has been published for CVE-2021-1386 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2021-1386 being exploited?

There is no known exploitation of CVE-2021-1386 in the wild and no public exploit code.

Sources

Also known as GHSA-crcr-fw92-82g6.