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How the CVE Works:
CVE-2025-31244 is a sandbox escape vulnerability in macOS Sequoia (pre-15.5) due to insufficient file quarantine checks. Malicious apps can bypass macOS’s Gatekeeper and sandbox restrictions by exploiting improper validation of file operations. This allows arbitrary code execution outside the restricted environment, potentially leading to system compromise. The flaw stems from incomplete handling of file metadata during execution, enabling attackers to craft specially designed files that evade security checks.
DailyCVE Form:
Platform: macOS
Version: <15.5
Vulnerability: Sandbox Escape
Severity: Critical
Date: 05/27/2025
Prediction: Patch by 06/15/2025
What Undercode Say:
Analytics:
- Exploit requires user interaction (e.g., opening a malicious file).
- Low complexity attack vector; high impact on confidentiality/integrity.
- Apple likely patching via XProtect updates or full OS upgrade.
Exploit Commands:
Craft malicious file (simplified PoC) echo "malicious_payload" | codesign -f -s - /tmp/exploit.app
Detection:
Check Gatekeeper logs for bypass attempts log show --predicate 'eventMessage contains "quarantine"' --last 24h
Mitigation:
Temporary workaround (disable quarantine flags cautiously) xattr -d com.apple.quarantine /path/to/suspicious/file
AppleScript Protection Snippet:
tell application "Finder" set file_quarantine to do shell script "xattr -p com.apple.quarantine " & quoted form of POSIX path of (target of front window as text) if file_quarantine contains "0083" then display alert "Malicious File Detected" end tell
Network Monitoring:
Monitor outbound connections from sandboxed apps lsof -i | grep "sandbox"
Patch Verification:
Confirm macOS version post-update sw_vers -productVersion
Kernel-Level Block (Root Required):
Disable dynamic code execution in sandbox (risky) sysctl -w kern.sandbox.dynamic=0
References:
- Apple Advisory: [Not yet published]
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-31244
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
