Out-of-bounds write in WhatsApp products - CVE-2020-1891
Published: September 9, 2020
Vulnerability identifier: #VU46539
CSH Severity: Medium
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-1891
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input within a user controlled parameter used in video call. A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system on 32-bit devices.
Affected software
WhatsApp Business for Android
WhatsApp Business for iPhone
WhatsApp Messenger for Android
WhatsApp Messenger for iOS
WhatsApp Business for iPhone
WhatsApp Messenger for Android
WhatsApp Messenger for iOS
How to mitigate CVE-2020-1891
Install updates from vendor's website.
WhatsApp Business for Android - update to 2.20.7
WhatsApp Business for iPhone - update to 2.20.20
WhatsApp Messenger for Android - update to 2.20.17
WhatsApp Messenger for iOS - update to 2.20.20
WhatsApp Business for iPhone - update to 2.20.20
WhatsApp Messenger for Android - update to 2.20.17
WhatsApp Messenger for iOS - update to 2.20.20