CVE-2020-27128 Cisco SD-WAN vManage Software Arbitrary File Creation Vulnerability

Medium 6.5 Published 6 Nov 2020 Updated 13 Nov 2024

Authenticated attackers can exploit improper API validation to perform directory traversal and write arbitrary files to 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-2020-27128?

CVE-2020-27128 is a medium-severity path traversal vulnerability in Cisco SD-WAN vManage, published on 6 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the application data endpoints of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to write arbitrary files to an affected system. The vulnerability is due to improper validation of requests to APIs. An attacker could exploit this vulnerability by sending malicious requests to an API within the affected application. A successful exploit could allow the attacker to conduct directory traversal attacks and write files to an arbitrary location on the targeted system.

Weakness: CWE-22

Which versions are affected by CVE-2020-27128?

It affects 1 product.

Products include Cisco Sd-Wan.

How do I fix CVE-2020-27128?

No fix has been published for CVE-2020-27128 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-2020-27128 being exploited?

There is no known exploitation of CVE-2020-27128 in the wild and no public exploit code.

Sources

Also known as GHSA-vgpq-9fqj-mrjr.