// For flags

CVE-2021-30666

Apple iOS WebKit Buffer Overflow Vulnerability

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

-
*SSVC
Descriptions

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Se abordó un problema de desbordamiento del búfer con un manejo de la memoria mejorada . Este problema es corregido en iOS versión 12.5.3. El procesamiento de contenido web diseñado maliciosamente puede conllevar a una ejecución de código arbitrario. Apple presenta conocimiento de un informe que indica que este problema puede haber sido explotado activamente

A flaw was found in the webkitgtk package. Affected versions of this package are vulnerable to a buffer overflow caused by improper bounds checking by the WebKit component. By persuading a victim to visit a specially crafted Web site, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

Apple iOS WebKit contains a buffer-overflow vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-04-13 CVE Reserved
  • 2021-05-04 CVE Published
  • 2021-11-03 Exploited in Wild
  • 2021-11-17 KEV Due Date
  • 2024-08-03 CVE Updated
  • 2024-08-14 EPSS Updated
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apple
Search vendor "Apple"
 Iphone Os
Search vendor "Apple" for product "Iphone Os"
 < 12.5.3
Search vendor "Apple" for product "Iphone Os" and version " < 12.5.3"
-
Affected