CVE-2021-1876 — Use After Free in Apple Macos

CWE-416 — Use After Free5 documents4 sources
Severity
8.8HIGHNVD
EPSS
0.8%
top 25.70%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Apple MacosApple MAC OS X
Timeline
PublishedSep 8
Latest updateMay 24

Description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. Processing maliciously crafted web content may lead to arbitrary code execution.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages3 packages

▶CVEListV5apple/macosunspecified — 11.3+1
▶NVDapple/macos11.0 — 11.3
▶NVDapple/mac_os_x10.14 — 10.14.5+4

🔴Vulnerability Details

2
GHSA
GHSA-3363-c452-8hxm: A use after free issue was addressed with improved memory management↗2022-05-24
▶
CVEList
CVE-2021-1876: A use after free issue was addressed with improved memory management↗2021-09-08
▶

📋Vendor Advisories

2
Apple
CVE-2021-1876: Security Update 2021-002 Catalina↗2021-04-26
▶
Apple
CVE-2021-1876: macOS Big Sur 11.3↗2021-04-26
▶
CVE-2021-1876 — Use After Free in Apple Macos | cvebase