CVE-2020-1909: facebook whatsapp business for ios Use After Free

Vulnerability summary

CVE-2020-1909 is a critical (CVSS 9.8) Use After Free vulnerability in facebook whatsapp business for ios. EPSS estimates a 2.28% chance of exploitation in the next 30 days, higher than 82.9% of scored vulnerabilities.

Timeline

1. 03-11-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

A use-after-free in a logging library in WhatsApp for iOS prior to v2.20.111 and WhatsApp Business for iOS prior to v2.20.111 could have resulted in memory corruption, crashes and potentially code execution. This could have happened only if several events occurred together in sequence, including receiving an animated sticker while placing a WhatsApp video call on hold.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.