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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-1879 Detail

Description

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..


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  6.1 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

ADP:  CISA-ADP
Base Score:  6.1 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://support.apple.com/en-us/HT212256 Release Notes  Vendor Advisory 
https://support.apple.com/en-us/HT212256 Release Notes  Vendor Advisory 
https://support.apple.com/en-us/HT212257 Release Notes  Vendor Advisory 
https://support.apple.com/en-us/HT212257 Release Notes  Vendor Advisory 
https://support.apple.com/en-us/HT212258 Release Notes  Vendor Advisory 
https://support.apple.com/en-us/HT212258 Release Notes  Vendor Advisory 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
Apple iOS, iPadOS, and watchOS WebKit Cross-Site Scripting (XSS) Vulnerability 11/03/2021 11/17/2021 Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') cwe source acceptance level NIST   CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
14.4.2
 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
12.5.2
 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
13.0		Up to (excluding)
14.4.2
 cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
7.3.3

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

7 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-1879
NVD Published Date:
04/02/2021
NVD Last Modified:
02/28/2025
Source:
Apple Inc.