CVE-2021-30977 — Classic Buffer Overflow in Apple Macos

CWE-120 — Classic Buffer Overflow6 documents3 sources
Severity
7.8HIGHNVD
EPSS
0.4%
top 39.34%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Apple MacosApple MAC OS X
Timeline
PublishedAug 24
Latest updateMar 14

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.1, Security Update 2021-008 Catalina, macOS Big Sur 11.6.2. A malicious application may be able to execute arbitrary code with kernel privileges.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages3 packages

▶CVEListV5apple/macosunspecified — 12.1+2
▶NVDapple/macos11.0 — 11.6.2+1
▶NVDapple/mac_os_x10.15 — 10.15.7+1

🔴Vulnerability Details

1
CVEList
CVE-2021-30977: A buffer overflow was addressed with improved bounds checking↗2021-08-24
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📋Vendor Advisories

4
Apple
CVE-2021-30977: macOS Monterey 12.3↗2022-03-14
▶
Apple
CVE-2021-30977: Security Update 2021-008 Catalina↗2021-12-13
▶
Apple
CVE-2021-30977: macOS Big Sur 11.6.2↗2021-12-13
▶
Apple
CVE-2021-30977: macOS Monterey 12.1↗2021-12-13
▶
CVE-2021-30977 — Classic Buffer Overflow in Apple Macos | cvebase