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How CVE-2025-31262 Works
This vulnerability allows malicious apps to bypass file system restrictions on Apple’s OS suite (visionOS, iOS, iPadOS, macOS, watchOS, tvOS). A flawed permission check enables unauthorized write access to protected directories, potentially compromising system integrity or user data. Attackers exploit improper sandboxing enforcement, leveraging crafted filesystem operations to escalate privileges or inject persistent payloads. The issue stems from inadequate validation of app-specific container paths, permitting cross-application data tampering.
DailyCVE Form
Platform: Apple OS Suite
Version: visionOS <2.3, iOS/iPadOS <18.3, macOS <15.3, watchOS <11.3, tvOS <18.3
Vulnerability: File system permission bypass
Severity: Critical
Date: 05/28/2025
Prediction: Patch expected by 06/15/2025
What Undercode Say:
Analytics:
- CVSS 4.0 Vector: `CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`
– Exploitability: High (Low complexity, no user interaction) - Affected Processes:
sandboxd, `kernel`
Exploit Commands:
Proof-of-Concept (PoC) for directory traversal mkdir -p "/var/mobile/Containers/Data/../../Library/Preferences" echo "malicious_data" > /var/mobile/../../Library/LaunchDaemons/payload.plist
Detection Script (Zsh):
!/bin/zsh
protected_dirs=("/Library" "/System" "/private/var")
for dir in $protected_dirs; do
if [[ -w $dir ]]; then
echo "Vulnerable: $dir is writable"
fi
done
Mitigation Commands:
Temporary fix (macOS): sudo chmod -R 755 /Library /System /private/var sudo chown root:wheel /Library/Preferences/
Kernel-Level Protection (XNU):
// Patch suggestion for sandbox.kext
kern_return_t sandbox_check_vnode(vnode_t vp, int operation) {
if (vp->v_flag & VPROTECTED) {
return EPERM; // Deny write
}
return 0;
}
Network Indicators:
- Suspicious `sandboxd` logs: `”deny file-write-data”` absence in compromised systems
– `fs_usage` anomalies: `openat(AT_FDCWD, “/protected/path”, O_WRONLY)`
Permanent Fix:
- Apply Apple updates via:
softwareupdate --install --all --restart
Forensic Artifacts:
- Log paths:
/var/log/system.log, `/var/db/diagnostics/`
– Key strings:"com.apple.sandbox.violation", `”file-write-data”`
End of Report.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
