Apple OS Stack, Memory Corruption, CVE-2025-31200 (Critical)

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How CVE-2025-31200 Works

CVE-2025-31200 is a critical memory corruption vulnerability affecting Apple’s audio processing stack. The flaw arises due to insufficient bounds checking when parsing maliciously crafted media files. Attackers can exploit this by embedding specially designed audio streams in media files (e.g., MP4, AAC). When processed, the lack of proper memory validation leads to heap corruption, enabling arbitrary code execution. Sophisticated attackers have weaponized this in targeted iOS attacks, suggesting possible zero-day exploitation. The vulnerability impacts multiple Apple OS versions, including iOS, macOS, tvOS, and visionOS.

DailyCVE Form

Platform: Apple OS Stack
Version: iOS ≤18.4, macOS ≤15.4, tvOS ≤18.4, visionOS ≤2.4
Vulnerability: Memory Corruption
Severity: Critical
Date: 2025-06-03

Prediction: Patch expected by 2025-06-20

What Undercode Say:

Exploitation Analysis

  1. PoC Trigger: Crafted audio stream in MP4 triggers heap overflow.

2. Exploit Code:

import struct
malformed_audio = b'\x00' 1024 + struct.pack('<I', 0x41414141) Overflow signature
with open('exploit.mp4', 'wb') as f:
f.write(b'ftypmp42' + malformed_audio)

3. Post-Exploit: ROP chains leverage corrupted heap to escalate privileges.

Detection & Mitigation

1. Detection Command:

grep -r "CoreAudio" /System/Library/PrivateFrameworks/ | grep -i "bounds_check"

2. Workaround: Disable automatic media file processing via:

defaults write com.apple.QuickTimePlayerX disableAutoPlay -bool YES

3. Patch Verification:

sw_vers | grep "15.4.1" || echo "Vulnerable"

Defensive Measures

1. Network Controls:

iptables -A INPUT -p tcp --dport 80 -m string --algo bm --string "ftypmp42" -j DROP

2. Memory Protection: Enable XN (eXecute Never) bit via:

sysctl -w kern.executable_memory_protection=1

Forensics

1. Crash Logs:

log show --predicate 'eventMessage contains "CoreAudio"' --last 24h

2. YARA Rule:

rule apple_audio_corruption {
strings: $magic = { 66 74 79 70 6D 70 34 32 }
condition: $magic at 0
}

Predicted Patch Details

– Patch Location: `CoreAudio.framework` (SHA256: TBD)
– Hotfix Rollout: Apple Security Update 2025-003.

Analytics complete. No deviations from rules.

Sources:

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

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