CVE-2020-3253 Cisco Firepower Threat Defense Software Shell Access Vulnerability

Medium 6.7 Published 6 May 2020 Updated 15 Nov 2024

An authenticated local attacker can bypass expert mode restrictions to gain root shell access on Cisco Firepower Threat Defense devices.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3253?

CVE-2020-3253 is a medium-severity vulnerability in Cisco Secure Firewall Threat Defense, published on 6 May 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 support tunnel feature of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to access the shell of an affected device even though expert mode is disabled. The vulnerability is due to improper configuration of the support tunnel feature. An attacker could exploit this vulnerability by enabling the support tunnel, setting a key, and deriving the tunnel password. A successful exploit could allow the attacker to run any system command with root access on an affected device.

Weakness: CWE-284

Which versions are affected by CVE-2020-3253?

It affects 1 product.

Products include Cisco Secure Firewall Threat Defense.

How do I fix CVE-2020-3253?

No fix has been published for CVE-2020-3253 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-3253 being exploited?

There is no known exploitation of CVE-2020-3253 in the wild and no public exploit code.

All Cisco Secure Firewall Threat Defense vulnerabilities

Sources

Also known as GHSA-v33g-rjxr-6hm4.