TI-2020-03378 Aliases CVE-2020-3877 GHSA-j8jm-xpp4-34xm

Out-of-bounds read in Apple macOS

LOW 37CWE-125Published 2020-02-27 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3, watchOS 6.1.2. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.

Why it matters now

EPSS 0.02047 81st percentileScored 2026-11-07

Fix Fixed macOS (Apple): macOS Catalina 10.15.3watchOS (Apple): watchOS 6.1.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apple	macOS	before macOS Catalina 10.15.3	macOS Catalina 10.15.3	Patch available	CNA
Apple	watchOS	before watchOS 6.1.2	watchOS 6.1.2	Patch available	CNA

macOS VendorApple Affected before macOS Catalina 10.15.3 Fixed in macOS Catalina 10.15.3 Patch available CNA
watchOS VendorApple Affected before watchOS 6.1.2 Fixed in watchOS 6.1.2 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:apple:mac_os_x::::::::	before 10.15.3	Vulnerable	Apple
cpe:2.3:o:apple:watchos::::::::	before 6.1.2	Vulnerable	Apple

cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.3 Vulnerable ·Apple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 6.1.2 Vulnerable ·Apple

Remediation

Fix · CNA macOS (Apple) Fixed in macOS Catalina 10.15.3
Fix · CNA watchOS (Apple) Fixed in watchOS 6.1.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2020-02-27
Apple macOS macOS Catalina 10.15.3
23 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 21 LOW
Other records, highest priority first
- TI-2020-03339 Out-of-bounds write in Apple iOSPriority CRITICAL 93
- TI-2020-03348 Memory corruption in Apple iOSPriority MEDIUM 42
- TI-2020-03373 Out-of-bounds write in Apple macOSPriority LOW 37
Show all 23 records →
Release · 2020-02-27
Apple watchOS watchOS 6.1.2
16 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 14 LOW
Other records, highest priority first
- TI-2020-03339 Out-of-bounds write in Apple iOSPriority CRITICAL 93
- TI-2020-03348 Memory corruption in Apple iOSPriority MEDIUM 42
- TI-2020-03355 Type confusion in Apple iOSPriority LOW 37
Show all 16 records →

Timeline

2026-10-02 Threatist record created from CVE-2020-3877
2026-10-03 Alias added: GHSA-j8jm-xpp4-34xm

References

Advisory 2

TI-2021-01573 Apple iOS and iPadOS: A remote attacker may be able to cause arbitrary code execution KEVCVSS 3.1CRITICAL 9.8
TI-2021-01572 Apple iOS and iPadOS: A remote attacker may be able to cause arbitrary code execution KEVCVSS 3.1CRITICAL 9.8
TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
TI-2012-01607 sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI… KEVCVSS 3.1CRITICAL 9.8
TI-2022-02117 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8

See all 3209 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences