CVE-2021-1844

Advisory lineage Upstream: 0 Downstream: 15
Modified
Published: 02 Apr 2021, 18:07
Last modified:03 Aug 2024, 16:25

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (nvd)
EPSS Score
1.4% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Apr 2021, 18:07
Published
Vulnerability first disclosed
03 Aug 2024, 16:25
Last Modified
Vulnerability information updated

Description

A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 14.4.1 and iPadOS 14.4.1, Safari 14.0.3 (v. 14610.4.3.1.7 and 15610.4.3.1.7), watchOS 7.3.2, macOS Big Sur 11.2.3. Processing maliciously crafted web content may lead to arbitrary 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: 1.40%• Percentile: 80%

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•ipados

    < 14.4.1

  • apple•iphone_os

    < 14.4.1

  • apple•macos

    < 11.2.3 | ≥ unspecified, < 11.2 | ≥ unspecified, < 14.4 | ≥ unspecified, < 7.3 | ≥ unspecified, < 14.0

  • apple•safari

    < 14.0.3

  • apple•tvos

    < 14.5

  • apple•watchos

    < 7.3.2

  • debian•debian_linux

    10.0

  • fedoraproject•fedora

    33

References (8)