CVE-2020-5785 Cross-site scripting in Teltonika Gateway TRB245

Medium 6.1 Published 1 Oct 2020 Updated 4 Aug 2024

An unauthenticated attacker can execute arbitrary scripts in the victim's browser via reflected XSS in the Teltonika TRB245 gateway.

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

What is CVE-2020-5785?

CVE-2020-5785 is a medium-severity cross-site scripting vulnerability in Teltonika Gateway TRB245, published on 1 Oct 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Insufficient output sanitization in Teltonika firmware TRB2_R_00.02.04.3 allows an unauthenticated attacker to conduct reflected cross-site scripting via a crafted ‘action’ or ‘pkg_name’ parameter.

Weakness: CWE-79

Which versions are affected by CVE-2020-5785?

It affects 1 product.

Products include Teltonika-Networks Trb245 Firmware.

How do I fix CVE-2020-5785?

No fix has been published for CVE-2020-5785 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2020-5785 being exploited?

There is no known exploitation of CVE-2020-5785 in the wild and no public exploit code.

Sources

Also known as GHSA-2w3c-4838-666w.