CVE-2021-30736
XNU Network Stack Kernel Heap Overflow
Severity Score
7.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 and iPadOS 14.6. An application may be able to execute arbitrary code with kernel privileges.
Se abordó Un desbordamiento de búfer con una mejora de la comprobación de tamaño. Este problema se corrigió en macOS Big Sur versión 11.4, tvOS versión 14.6, watchOS versión 7.5, iOS versión 14.6 e iPadOS versión 14.6. Una aplicación puede ser capaz de ejecutar código arbitrario con privilegios del kernel
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-04-13 CVE Reserved
- 2021-05-26 CVE Published
- 2024-08-03 CVE Updated
- 2024-08-14 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
References (4)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://support.apple.com/en-us/HT212528 | 2023-01-09 | |
| https://support.apple.com/en-us/HT212529 | 2023-01-09 | |
| https://support.apple.com/en-us/HT212532 | 2023-01-09 | |
| https://support.apple.com/en-us/HT212533 | 2023-01-09 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Apple Search vendor "Apple" | Ipados Search vendor "Apple" for product "Ipados" | < 14.6 Search vendor "Apple" for product "Ipados" and version " < 14.6" | - |
Affected
| ||||||
| Apple Search vendor "Apple" | Iphone Os Search vendor "Apple" for product "Iphone Os" | < 14.6 Search vendor "Apple" for product "Iphone Os" and version " < 14.6" | - |
Affected
| ||||||
| Apple Search vendor "Apple" | Macos Search vendor "Apple" for product "Macos" | >= 11.0.1 < 11.4 Search vendor "Apple" for product "Macos" and version " >= 11.0.1 < 11.4" | - |
Affected
| ||||||
| Apple Search vendor "Apple" | Tvos Search vendor "Apple" for product "Tvos" | < 14.6 Search vendor "Apple" for product "Tvos" and version " < 14.6" | - |
Affected
| ||||||
| Apple Search vendor "Apple" | Watchos Search vendor "Apple" for product "Watchos" | < 7.5 Search vendor "Apple" for product "Watchos" and version " < 7.5" | - |
Affected
| ||||||