#VU49849 Race condition in Facebook Messenger
Published: January 20, 2021
Vulnerability identifier: #VU49849
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Facebook Messenger
Facebook Messenger
Software vendor:
Google
Description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a race condition within the way the mobile application implements WebRTC features for voice and video communications. A remote attacker can send specially crafted SDP messages to the affected device while the victim is trying to make a voice or video call and intercept video and audio fragments from the victim's phone before the call is accepted by the callee.
Remediation
Install updates from vendor's website.