CVE-2021-30954

Advisory lineage Upstream: 0 Downstream: 11
Modified
Published: 24 Aug 2021, 18:50
Last modified:03 Aug 2024, 22:48

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.3 HIGH
v2.0 (nvd)
EPSS Score
0.32% LOW
0% probability +0.06%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Aug 2021, 18:50
Published
Vulnerability first disclosed
03 Aug 2024, 22:48
Last Modified
Vulnerability information updated

Description

A type confusion issue was addressed with improved memory handling. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 9.3AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.32%• Percentile: 55%

Techniques & Countermeasures

  • CWE-843•Access of Resource Using Incompatible Type ('Type Confusion')

    The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Affected Systems

  • Unknown•iOS and iPadOS

    ≥ unspecified, < 15.2

  • apple•ipados

    < 15.2

  • apple•iphone_os

    < 15.2

  • Unknown•macOS

    ≥ 12.0, < 12.1 | ≥ unspecified, < 12.1 | ≥ unspecified, < 15.2

  • apple•safari

    < 15.2

  • apple•tvos

    < 15.2

  • apple•watchos

    < 8.3 | ≥ unspecified, < 8.3

  • debian•debian_linux

    10.0 | 11.0

  • fedoraproject•fedora

    34 | 35

References (10)