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CVE-2018-17780

Date: September 29, 2018

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.

Severity Score

Related Resources (6)

https://www.inputzero.io/2018/09/bug-bounty-telegram-cve-2018-17780.html
http://www.securityfocus.com/bid/105521
https://nvd.nist.gov/vuln/detail/CVE-2018-17780
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-17780
https://security-tracker.debian.org/tracker/CVE-2018-17780
https://www.mend.io/vulnerability-database/CVE-2018-17780

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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