What is CVE-2018-17780?

CVE-2018-17780 is a vulnerability in Telegram Desktop and Telegram Messenger that leaks end-user public and private IP addresses during a call.

How does CVE-2018-17780 affect Telegram Desktop and Telegram Messenger?

CVE-2018-17780 allows P2P connections from clients outside of the My Contacts list, leading to the leakage of end-user IP addresses.

What is the severity of CVE-2018-17780?

CVE-2018-17780 has a severity rating of medium, with a value of 6.5.

How can I fix CVE-2018-17780?

To fix CVE-2018-17780, update Telegram Desktop to version 1.3.15 or later, and update Telegram Messenger to version 3.3.0.1 or later.

Where can I find more information about CVE-2018-17780?

For more information about CVE-2018-17780, you can refer to the following sources: [SecurityFocus](http://www.securityfocus.com/bid/105521) and [InputZero](https://www.inputzero.io/2018/09/bug-bounty-telegram-cve-2018-17780.html).

Vulnerability/
CVE-2018-17780

medium

6.5

CWE

200

29/9/2018

5/8/2024

CVE-2018-17780: Infoleak

First published: Sat Sep 29 2018(Updated: )

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.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Telegram Telegram Desktop	=1.3.14
Telegram Telegram Messenger	=3.3.0.0

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Reference Links

Frequently Asked Questions

What is CVE-2018-17780?
CVE-2018-17780 is a vulnerability in Telegram Desktop and Telegram Messenger that leaks end-user public and private IP addresses during a call.
How does CVE-2018-17780 affect Telegram Desktop and Telegram Messenger?
CVE-2018-17780 allows P2P connections from clients outside of the My Contacts list, leading to the leakage of end-user IP addresses.
What is the severity of CVE-2018-17780?
CVE-2018-17780 has a severity rating of medium, with a value of 6.5.
How can I fix CVE-2018-17780?
To fix CVE-2018-17780, update Telegram Desktop to version 1.3.15 or later, and update Telegram Messenger to version 3.3.0.1 or later.
Where can I find more information about CVE-2018-17780?
For more information about CVE-2018-17780, you can refer to the following sources: [SecurityFocus](http://www.securityfocus.com/bid/105521) and [InputZero](https://www.inputzero.io/2018/09/bug-bounty-telegram-cve-2018-17780.html).

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collector/mitre-cve
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vendor/telegram
canonical/telegram telegram desktop
version/telegram telegram desktop/1.3.14
canonical/telegram telegram messenger
version/telegram telegram messenger/3.3.0.0

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