CVE-2021-30787 — Integer Underflow (Wrap or Wraparound) in Apple Macos

CWE-191 — Integer Underflow (Wrap or Wraparound)6 documents6 sources
Severity
7.8HIGHNVD
EPSS
0.3%
top 43.76%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Apple MacosApple Security Update CatalinaApple MAC OS X
Timeline
PublishedSep 8
Latest updateMay 26

Description

This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. An application may be able to cause unexpected system termination or write kernel memory.

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 Packages4 packages

▶CVEListV5apple/security_update_catalinaunspecified — 2021
▶CVEListV5apple/macosunspecified — 11.5+1
▶NVDapple/macos11.0 — 11.5
▶NVDapple/mac_os_x10.14 — 10.14.5+3

🔴Vulnerability Details

2
GHSA
GHSA-8558-rh5p-hjfm: This issue was addressed with improved checks↗2022-05-24
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CVEList
CVE-2021-30787: This issue was addressed with improved checks↗2021-09-08
▶

📋Vendor Advisories

3
Red Hat
ntfs-3g: integer underflow in fuse_lib_readdir enables arbitrary memory read operations↗2022-05-26
▶
Microsoft
An integer underflow in fuse_lib_readdir enables arbitrary memory read operations in NTFS-3G through 2021.8.22 when using libfuse-lite.↗2022-05-10
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Apple
CVE-2021-30787: Security Update 2021-005 Mojave↗2021-07-21
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