CVE-2019-12649 Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability

Medium 6.7 Published 25 Sep 2019 Updated 20 Nov 2024

An authenticated local attacker can bypass digital signature verification to install malicious images or execute unsigned binaries on Cisco IOS XE 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-2019-12649?

CVE-2019-12649 is a medium-severity vulnerability in Cisco Ios, published on 25 Sep 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the Image Verification feature of Cisco IOS XE Software could allow an authenticated, local attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability exists because, under certain circumstances, an affected device can be configured to not verify the digital signatures of system image files during the boot process. An attacker could exploit this vulnerability by abusing a specific feature that is part of the device boot process. A successful exploit could allow the attacker to install and boot a malicious software image or execute unsigned binaries on the targeted device.

Weakness: CWE-347

Which versions are affected by CVE-2019-12649?

It affects 2 products.

Products include Cisco Ios, Cisco Ios Xe.

How do I fix CVE-2019-12649?

No fix has been published for CVE-2019-12649 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-12649 being exploited?

There is no known exploitation of CVE-2019-12649 in the wild and no public exploit code.

All Cisco Ios vulnerabilities

Sources

Also known as GHSA-p6rv-q5px-g7g8.