Vulnerability · Published Jan 4, 2022 · Assigned by facebook
CVE-2021-24042
Critical 9.8
In plain English
A critical-severity heap buffer overflow in WhatsApp Business for Android from Facebook. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities).
Official description
The calling logic for WhatsApp for Android prior to v2.21.23, WhatsApp Business for Android prior to v2.21.23, WhatsApp for iOS prior to v2.21.230, WhatsApp Business for iOS prior to v2.21.230, WhatsApp for KaiOS prior to v2.2143, WhatsApp Desktop prior to v2.2146 could have allowed an out-of-bounds write if a user makes a 1:1 call to a malicious actor.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WhatsApp Desktop | unspecified – before v2.2146 | |
| WhatsApp for KaiOS | unspecified – before v2.2143 | |
| WhatsApp Business for iOS | unspecified – before v2.21.230 | |
| WhatsApp for iOS | unspecified – before v2.21.230 | |
| WhatsApp Business for Android | unspecified – before v2.21.23 | |
| WhatsApp for Android | unspecified – before v2.21.23 |
Weakness: CWE-122, CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.whatsapp.com/security/advisories/2021/ x_refsource_CONFIRM