How the CVE Works:
CVE-2025-24264 is a memory corruption vulnerability in Apple’s WebKit browser engine, affecting Safari and embedded browsers across iOS, iPadOS, macOS, tvOS, and visionOS. The flaw arises due to improper handling of maliciously crafted web content, leading to unexpected Safari crashes or potential arbitrary code execution. Attackers exploit this by designing web pages with specially manipulated objects that trigger heap memory corruption during processing. Successful exploitation could allow remote code execution (RCE) under the context of the compromised browser process, enabling further system compromise.
DailyCVE Form:
Platform: Apple WebKit
Version: Safari ≤18.4
Vulnerability: Memory Corruption
Severity: Critical
Date: 04/04/2025
What Undercode Say:
Exploitation Analysis:
- Crash Trigger: Crafted JavaScript/HTML objects force WebKit into mishandling memory allocations.
- Heap Spraying: Attackers may deploy heap grooming to control memory layout before corruption.
- RCE Payload: Post-corruption, shellcode execution is possible via manipulated pointers.
Detection & Mitigation:
Check Safari version (macOS): /usr/bin/safari --version Log suspicious crashes (macOS): log show --predicate 'process == "Safari"' --last 24h Temporary mitigation (disable WebKit JIT): defaults write com.apple.Safari WebKitJavaScriptEnabled -bool false
Patch Verification:
macOS: system_profiler SPSoftwareDataType | grep "System Version" iOS/iPadOS: Settings > General > About > Version
Exploit PoC (Hypothetical):
<!-- Malicious HTML snippet triggering memory corruption --> <script> let spray = new ArrayBuffer(0x1000); // Heap manipulation logic here </script>
Protection Measures:
- Apply Apple’s patches for visionOS 2.4+, iOS 18.4+, etc.
- Disable JavaScript for untrusted sites via Safari Preferences.
- Deploy endpoint protection tools to monitor WebKit process behavior.
Network Indicators:
- Unusual traffic to domains hosting obfuscated JavaScript.
- Safari crashes with `EXC_BAD_ACCESS` in WebKit processes.
Forensic Commands:
Extract Safari crash logs (macOS): grep -r "WebKit" ~/Library/Logs/DiagnosticReports/
References:
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-24264
Extra Source Hub:
Undercode
