CVE-2020-3521 Cisco Data Center Network Manager Read File Path Traversal Vulnerability

Medium 5.3 Published 26 Aug 2020 Updated 13 Nov 2024

An authenticated attacker can exploit a path traversal vulnerability in Cisco DCNM to read arbitrary files on the system.

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-2020-3521?

CVE-2020-3521 is a medium-severity path traversal vulnerability in Cisco Data Center Network Manager, published on 26 Aug 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in a specific REST API of Cisco Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to conduct directory traversal attacks on an affected device. The vulnerability is due to insufficient validation of user-supplied input to the API. An attacker with a low-privileged account could exploit this vulnerability by sending a crafted request to the API. A successful exploit could allow the attacker to read arbitrary files on the affected system.

Weakness: CWE-20

Which versions are affected by CVE-2020-3521?

It affects 1 product.

Products include Cisco Data Center Network Manager.

How do I fix CVE-2020-3521?

No fix has been published for CVE-2020-3521 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-2020-3521 being exploited?

There is no known exploitation of CVE-2020-3521 in the wild and no public exploit code.

All Cisco Data Center Network Manager vulnerabilities

Sources

Also known as GHSA-89j8-pfrr-r63r.