CVE-2020-3537 Cisco Jabber for Windows Universal Naming Convention Link Handling Vulnerability

Medium 5.7 Published 4 Sep 2020 Updated 13 Nov 2024

An authenticated remote attacker can trick a user into clicking a UNC link to access sensitive information via improper message validation.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2020-3537?

CVE-2020-3537 is a medium-severity vulnerability in Cisco Jabber, published on 4 Sep 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability in Cisco Jabber for Windows software could allow an authenticated, remote attacker to gain access to sensitive information. The vulnerability is due to improper validation of message contents. An attacker could exploit this vulnerability by sending specially crafted messages that contain Universal Naming Convention (UNC) links to a targeted user and convincing the user to follow the provided link. A successful exploit could allow the attacker to cause the application to access a remote system, possibly allowing the attacker to gain access to sensitive information that the attacker could use in additional attacks.

Weakness: CWE-200

Which versions are affected by CVE-2020-3537?

It affects 1 product.

Products include Cisco Jabber.

How do I fix CVE-2020-3537?

No fix has been published for CVE-2020-3537 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-3537 being exploited?

There is no known exploitation of CVE-2020-3537 in the wild and no public exploit code.

Sources

Also known as GHSA-fg68-5m2x-55qr.