Vulnerability Details : CVE-2021-24042
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.
Vulnerability category: OverflowMemory Corruption
Products affected by CVE-2021-24042
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:desktop:-:*:*
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:business:iphone_os:-:*
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:business:android:*:*
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:kaios:*:*
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:-:*
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:-:*
Exploit prediction scoring system (EPSS) score for CVE-2021-24042
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-24042
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-24042
-
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Assigned by: cve-assign@fb.com (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-24042
-
https://www.whatsapp.com/security/advisories/2021/
WhatsApp Security AdvisoriesNot Applicable;Vendor Advisory
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