#VU28172 Information disclosure in Signal Private Messenger for Android and Signal Private Messenger for iOS - CVE-2020-5753 

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Main Vulnerability Database Vulnerabilities #VU28172

#VU28172 Information disclosure in Signal Private Messenger for Android and Signal Private Messenger for iOS - CVE-2020-5753

Published: May 21, 2020


Vulnerability identifier: #VU28172
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-5753
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Signal Private Messenger for Android
Signal Private Messenger for iOS
Software vendor:
Signal Foundation

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to application discloses currently used DNS server to arbitrary user from non-contact list. The issue is related to how WebRTC processes ICE Candidates, which takes place before a user decides to answer an incoming Signal call. A remote attacker can gain access to victim's current DNS server IP address and based on this data uncover victim's geographical location.


Remediation

Install updates from vendor's website.

External links