CVE-2021-1391 Cisco IOS and IOS XE Software Privilege Escalation Vulnerability

Medium 5.1 Published 24 Mar 2021 Updated 8 Nov 2024

An authenticated local attacker can escalate privileges to root by bypassing consent tokens using residual development scripts in Cisco IOS XE.

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-2021-1391?

CVE-2021-1391 is a medium-severity vulnerability in Cisco Ios, published on 24 Mar 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 dragonite debugger of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root privilege. The vulnerability is due to the presence of development testing and verification scripts that remained on the device. An attacker could exploit this vulnerability by bypassing the consent token mechanism with the residual scripts on the affected device. A successful exploit could allow the attacker to escalate from privilege level 15 to root privilege.

Weakness: CWE-489

Which versions are affected by CVE-2021-1391?

It affects 2 products.

Products include Cisco Ios, Cisco Ios Xe.

How do I fix CVE-2021-1391?

No fix has been published for CVE-2021-1391 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-1391 being exploited?

There is no known exploitation of CVE-2021-1391 in the wild and no public exploit code.

All Cisco Ios vulnerabilities

Sources

Also known as GHSA-4xjv-crqf-4qqv.