// For flags

CVE-2021-1879

Apple iOS, iPadOS, and watchOS WebKit Cross-Site Scripting (XSS) Vulnerability

Severity Score

6.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

-
*SSVC
Descriptions

This issue was addressed by improved management of object lifetimes. This issue is fixed in iOS 12.5.2, iOS 14.4.2 and iPadOS 14.4.2, watchOS 7.3.3. Processing maliciously crafted web content may lead to universal cross site scripting. Apple is aware of a report that this issue may have been actively exploited..

Este problema es abordado con una administración del tiempo de vida de objetos mejorada. Este problema es corregido en iOS versión 12.5.2, iOS versión 14.4.2 y iPadOS versión 14.4.2, watchOS versión 7.3.3. El procesamiento de contenido web diseñado malicioso puede conllevar a ataques de tipo cross site scripting universales. Apple tiene conocimiento de un reporte que indica que este problema puede haber sido explotado activamente.

Apple iOS, iPadOS, and watchOS WebKit contain an unspecified vulnerability that allows for universal cross-site scripting (XSS) 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
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-08 CVE Reserved
  • 2021-03-29 CVE Published
  • 2021-11-03 Exploited in Wild
  • 2021-11-17 KEV Due Date
  • 2023-12-17 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- First Exploit
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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"
 Ipados
Search vendor "Apple" for product "Ipados"
 < 14.4.2
Search vendor "Apple" for product "Ipados" and version " < 14.4.2"
-
Affected
Apple
Search vendor "Apple"
 Iphone Os
Search vendor "Apple" for product "Iphone Os"
 < 12.5.2
Search vendor "Apple" for product "Iphone Os" and version " < 12.5.2"
-
Affected
Apple
Search vendor "Apple"
 Iphone Os
Search vendor "Apple" for product "Iphone Os"
 >= 13.0 < 14.4.2
Search vendor "Apple" for product "Iphone Os" and version " >= 13.0 < 14.4.2"
-
Affected
Apple
Search vendor "Apple"
 Watchos
Search vendor "Apple" for product "Watchos"
 < 7.3.3
Search vendor "Apple" for product "Watchos" and version " < 7.3.3"
-
Affected