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How the CVE Works
CVE-2025-31247 is a logic flaw in macOS file system state management, allowing unauthorized access to protected directories. The vulnerability arises when improper validation of file system permissions occurs during privileged operations. Attackers exploit race conditions or symlink-based redirections to bypass sandbox restrictions, gaining read/write access to sensitive data. This affects macOS Ventura, Sequoia, and Sonoma due to insufficient checks in kernel-level file operations.
DailyCVE Form
Platform: macOS
Version: Ventura 13.7.5, Sequoia 15.4, Sonoma 14.7.5
Vulnerability: File system bypass
Severity: Critical
Date: 05/27/2025
Prediction: Patch by 06/15/2025
What Undercode Say:
Exploitation:
1. Race Condition Trigger:
while true; do ln -sf /protected/data /tmp/exploit; done
2. Symlink Attack:
symlink("/tmp/exploit", "/private/var/log");
Protection:
1. Pre-Patch Mitigation:
sudo chmod -R 700 /protected/data
2. Kernel Module Check:
kextstat | grep com.apple.filesystems
Detection Script:
import os
if os.path.exists("/tmp/exploit"):
print("CVE-2025-31247 likely exploited!")
Post-Patch Verification:
system_profiler SPSoftwareDataType | grep "System Version"
Analytics:
- Attack Surface: Kernel file ops
- Exploit Complexity: Low
- User Interaction: None
- CVSS 4.0 Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
