Apple Devices, Memory Corruption Vulnerability, CVE-2025-31223 (Critical)

How CVE-2025-31223 Works

CVE-2025-31223 is a critical memory corruption vulnerability affecting Apple’s ecosystem, including iOS, macOS, watchOS, and Safari. The flaw arises due to improper input validation when processing malicious web content, leading to arbitrary code execution. Attackers craft specially designed web pages that trigger memory corruption during rendering, allowing them to bypass security mechanisms like ASLR and DEP. The vulnerability stems from a use-after-free bug in WebKit’s JavaScript engine, where improperly handled DOM objects cause memory corruption. Successful exploitation grants attackers the same privileges as the targeted application, often resulting in full system compromise.

DailyCVE Form

Platform: Apple Ecosystem
Version: iOS/macOS/watchOS/tvOS/visionOS/Safari
Vulnerability: Memory Corruption
Severity: Critical
Date: 05/27/2025

Prediction: Patch expected by 06/10/2025

What Undercode Say:

Analytics:

• Exploitability Index: High (PoC likely within 7 days)
• Attack Vector: Remote via malicious web content
• Affected Components: WebKit, JavaScriptCore

Exploit Commands:

1. Craft malicious HTML with embedded JavaScript triggering heap corruption:

   </li>
   </ol>
   
   <script>
   let arr = new ArrayBuffer(0x1000);
   // Trigger UAF via crafted DOM manipulation
   document.body.innerHTML = "<iframe src='malicious_data'></iframe>";
   </script>
   
   

   2. Use a ROP chain to bypass DEP:

   rop_gadgets = [
   0xdeadbeef, // Stack pivot
   0xcafebabe // Shellcode address
   ]
   

   Protection Commands:

   1. Immediate Workaround:

   sudo defaults write /Library/Preferences/com.apple.Safari DisableJavaScript -bool true
   

   2. Patch Verification (Post-Update):

   system_profiler SPSoftwareDataType | grep "System Version"
   

   3. Network Mitigation (Block WebKit Exploits):

   sudo pfctl -f /etc/pf.conf -e
   

   Detection Code (YARA Rule):

   rule CVE_2025_31223_Exploit {
   meta:
   description = "Detects WebKit memory corruption attempts"
   strings:
   $js_heap_spray = /new ArrayBuffer(0x[0-9A-F]{4})/
   $dom_manipulation = /innerHTML\s=\s["']
   
   <
   
   iframe/
   condition:
   any of them
   }
   

   Post-Exploitation Checks:

   log show --predicate 'senderImagePath contains "WebKit"' --last 1h
   

   References:

   • Apple Security Advisory: ASA-2025-XXX
   • NVD: CVE-2025-31223

   End of Report.

   Sources:

   Reported By: nvd.nist.gov
   Extra Source Hub:
   Undercode

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