CVE-2021-30851

Advisory lineage Upstream: 0 Downstream: 17
Modified
Published: 24 Aug 2021, 18:49
Last modified:03 Aug 2024, 22:48

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (nvd)
EPSS Score
1.03% LOW
1% probability +0.08%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Aug 2021, 18:49
Published
Vulnerability first disclosed
03 Aug 2024, 22:48
Last Modified
Vulnerability information updated

Description

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code execution.

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.8AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 1.03%• Percentile: 77%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • apple•ios and ipados

    ≥ unspecified, < 15

  • apple•ipados

    < 15.0

  • apple•iphone_os

    < 15.0

  • apple•macos

    < 12.0.1 | 12.0.1

  • apple•safari

    < 15.0 | ≥ unspecified, < 15

  • apple•tvos

    < 15.0 | ≥ unspecified, < 15

  • apple•watchos

    < 8.0 | ≥ unspecified, < 8

  • debian•debian_linux

    10.0 | 11.0

  • fedoraproject•fedora

    33 | 34

References (10)