CVE-2020-5769 Cross-site scripting in Teltonika Gateway TRB245
Remote authenticated attackers can inject malicious scripts into the gateway configuration, enabling persistent cross-site scripting attacks.
- 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-2020-5769?
CVE-2020-5769 is a medium-severity cross-site scripting vulnerability in Teltonika Gateway TRB245, published on 17 Jul 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
Insufficient output sanitization in Teltonika firmware TRB2_R_00.02.02 allows a remote, authenticated attacker to conduct persistent cross-site scripting (XSS) attacks by injecting malicious client-side code into the 'URL/ Host / Connection' form in the 'DATA TO SERVER' configuration section.
Weakness: CWE-79
Which versions are affected by CVE-2020-5769?
It affects 1 product.
Products include Teltonika-Networks Gateway Trb245 Firmware.
How do I fix CVE-2020-5769?
No fix has been published for CVE-2020-5769 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-2020-5769 being exploited?
There is no known exploitation of CVE-2020-5769 in the wild and no public exploit code.
Sources
Also known as GHSA-j74f-6554-w8gh.