CVE-2020-1909 Use after free in WhatsApp Business for iOS
A use-after-free in WhatsApp for iOS allows attackers to cause crashes or potentially execute code via specific animated sticker interactions during video calls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-1909?
CVE-2020-1909 is a critical use after free vulnerability in Facebook WhatsApp Business for iOS, published on 3 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-416
Which versions are affected by CVE-2020-1909?
It affects 2 products.
Products include Whatsapp Whatsapp, Whatsapp Whatsapp Business.
How do I fix CVE-2020-1909?
No fix has been published for CVE-2020-1909 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2020-1909 being exploited?
There is no known exploitation of CVE-2020-1909 in the wild and no public exploit code.
Other vulnerabilities in Facebook WhatsApp Business for iOS
Sources
Also known as GHSA-553h-pw8j-m6f2.