CVE-2022-22579
📋 TL;DR
CVE-2022-22579 is a memory corruption vulnerability in Apple's STL file processing that could allow arbitrary code execution or application crashes. Attackers can exploit this by tricking users into opening malicious STL files. Affected users include anyone running vulnerable versions of iOS, iPadOS, tvOS, or macOS.
💻 Affected Systems
- iOS
- iPadOS
- tvOS
- macOS
📦 What is this software?
Ipados by Apple
Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →Tvos by Apple
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control of the device, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Application crash (denial of service) or limited code execution in the context of the vulnerable application, potentially leading to data leakage or further exploitation.
If Mitigated
No impact if systems are patched or if users avoid opening untrusted STL files.
🎯 Exploit Status
Exploitation requires user interaction to open a malicious STL file. No public exploit code is known, but the vulnerability is serious enough that exploitation is plausible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: iOS 15.3, iPadOS 15.3, tvOS 15.3, macOS Monterey 12.2, macOS Big Sur 11.6.3, Security Update 2022-001 Catalina
Vendor Advisory: https://support.apple.com/en-us/HT213053
Restart Required: Yes
Instructions:
1. Open Settings app. 2. Go to General > Software Update. 3. Download and install the latest update. 4. Restart device when prompted.
🔧 Temporary Workarounds
Block STL file extensions
allPrevent opening of STL files via email filters or web gateways
User awareness training
allEducate users not to open STL files from untrusted sources
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of unauthorized applications
- Use endpoint protection that can detect malicious file behavior
🔍 How to Verify
Check if Vulnerable:
Check system version against affected versions list. On macOS: About This Mac > Overview. On iOS/iPadOS: Settings > General > About > Version.Check Version:
macOS: sw_vers -productVersion, iOS/iPadOS: Settings > General > About > Version (no CLI command)Verify Fix Applied:
Verify system version is equal to or greater than patched versions: iOS/iPadOS 15.3+, tvOS 15.3+, macOS Monterey 12.2+, macOS Big Sur 11.6.3+, or Security Update 2022-001 Catalina installed.📡 Detection & Monitoring
Log Indicators:
- Application crashes related to STL file processing
- Unexpected process termination of applications handling STL files
Network Indicators:
- Downloads of STL files from untrusted sources
- STL file attachments in email traffic
SIEM Query:
source="*" ("STL" AND ("crash" OR "terminated" OR "segfault")) OR (file_extension="stl" AND download_source="external")🔗 References
- https://support.apple.com/en-us/HT213053
- https://support.apple.com/en-us/HT213054
- https://support.apple.com/en-us/HT213055
- https://support.apple.com/en-us/HT213056
- https://support.apple.com/en-us/HT213057
- https://support.apple.com/en-us/HT213053
- https://support.apple.com/en-us/HT213054
- https://support.apple.com/en-us/HT213055
- https://support.apple.com/en-us/HT213056
- https://support.apple.com/en-us/HT213057
