CVE-2021-30877 — Out-of-bounds Read in Apple Macos

CWE-125 — Out-of-bounds Read5 documents3 sources
Severity
7.1HIGHNVD
EPSS
0.2%
top 52.58%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Apple MacosApple MAC OS X
Timeline
PublishedAug 24
Latest updateOct 25

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:HExploitability: 1.8 | Impact: 5.2

Affected Packages3 packages

▶CVEListV5apple/macosunspecified — 12.0+2
▶NVDapple/macos11.0 — 11.6.1+1
▶NVDapple/mac_os_x10.15 — 10.15.6+1

🔴Vulnerability Details

1
CVEList
CVE-2021-30877: An out-of-bounds read was addressed with improved bounds checking↗2021-08-24
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📋Vendor Advisories

3
Apple
CVE-2021-30877: macOS Big Sur 11.6.1↗2021-10-25
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Apple
CVE-2021-30877: Security Update 2021-007 Catalina↗2021-10-25
▶
Apple
CVE-2021-30877: macOS Monterey 12.0.1↗2021-10-25
▶
CVE-2021-30877 — Out-of-bounds Read in Apple Macos | cvebase