CVE-2018-17780 Information disclosure in n/a

Medium 6.5 Published 29 Sep 2018 Updated 5 Aug 2024

Telegram Desktop leaks user IP addresses during calls due to unsafe default P2P connection settings, exposing private network information.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2018-17780?

CVE-2018-17780 is a medium-severity vulnerability in n/a, published on 29 Sep 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.

Weakness: CWE-200

Which versions are affected by CVE-2018-17780?

It affects 2 products.

Products include Telegram Telegram Desktop, Telegram Telegram Messenger.

How do I fix CVE-2018-17780?

Apply the vendor's patch.

Is CVE-2018-17780 being exploited?

There is no known exploitation of CVE-2018-17780 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2018-17780, GHSA-r3p8-5cf3-rwmg, UBUNTU-CVE-2018-17780.