Vulnerability CVE-2021-30795
Published: 2021-09-08

Description:
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to arbitrary code execution.

See advisories in our WLB2 database:
Topic
Author
Date
High
WebKit WebCore::FrameLoader::PolicyChecker::checkNavigationPolicy Heap Use-After-Free
Google Security ...
20.08.2021

Type:

CWE-416

 (Use After Free)

CVSS2 => (AV:N/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9.3/10
10/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Apple -> Safari 
Apple -> Iphone os 
Apple -> Macos 
Apple -> TVOS 
Apple -> Watchos 

 References:
https://support.apple.com/en-us/HT212606
https://support.apple.com/en-us/HT212604
https://support.apple.com/en-us/HT212605
https://support.apple.com/en-us/HT212602
https://support.apple.com/en-us/HT212601
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