CVE-2020-3437 Cisco SD-WAN vManage Software Information Disclosure Vulnerability

Medium 6.5 Published 16 Jul 2020 Updated 13 Nov 2024

Authenticated attackers can read arbitrary files on the underlying filesystem via the web management interface of Cisco SD-WAN vManage.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3437?

CVE-2020-3437 is a medium-severity path traversal vulnerability in Cisco SD-WAN vManage, published on 16 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to read arbitrary files on the underlying filesystem of the device. The vulnerability is due to insufficient file scope limiting. An attacker could exploit this vulnerability by creating a specific file reference on the filesystem and then accessing it through the web-based management interface. A successful exploit could allow the attacker to read arbitrary files from the filesystem of the underlying operating system.

Weakness: CWE-59

Which versions are affected by CVE-2020-3437?

It affects 1 product.

Products include Cisco Sd-Wan Firmware.

How do I fix CVE-2020-3437?

No fix has been published for CVE-2020-3437 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-2020-3437 being exploited?

There is no known exploitation of CVE-2020-3437 in the wild and no public exploit code.

Sources

Also known as GHSA-hrwv-7vp5-r8pf.