CVE-2020-9939 — Time-of-check Time-of-use (TOCTOU) Race Condition in Apple Macos

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition3 documents3 sources
Severity
6.4MEDIUMNVD
EPSS
0.0%
top 86.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Apple MacosApple MAC OS XApple Macos Catalina 10.15.6 Security Update 2020-004 Mojave Security Update 2020-004
Timeline
PublishedOct 22
Latest updateMay 24

Description

This issue was addressed with improved checks. This issue is fixed in macOS Catalina 10.15.6. A local user may be able to load unsigned kernel extensions.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.5 | Impact: 5.9

Affected Packages3 packages

▶CVEListV5apple/macosunspecified — macOS Catalina 10.15.6
▶NVDapple/mac_os_x< 10.15.6

🔴Vulnerability Details

1
GHSA
GHSA-3cvr-9v2w-rhhq: This issue was addressed with improved checks↗2022-05-24
▶

📋Vendor Advisories

1
Apple
CVE-2020-9939: macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra↗2020-07-15
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