CVE-2023-47040
📋 TL;DR
Adobe Media Encoder versions 24.0.2 and earlier, and 23.6 and earlier, contain an out-of-bounds read vulnerability when parsing malicious files. An attacker could exploit this to execute arbitrary code with the privileges of the current user. Exploitation requires user interaction, such as opening a crafted file.
💻 Affected Systems
- Adobe Media Encoder
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise via arbitrary code execution with user privileges, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Application crash (denial of service) or limited information disclosure from memory reads; code execution is possible but requires successful exploitation.
If Mitigated
No impact if the application is not used to open untrusted files or if patched.
🎯 Exploit Status
Exploitation requires user interaction (opening a malicious file) and bypassing memory protections; no public exploits are known as of the advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 24.0.3 and later, 23.6.1 and later
Vendor Advisory: https://helpx.adobe.com/security/products/media-encoder/apsb23-63.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud application. 2. Navigate to the 'Apps' section. 3. Find Adobe Media Encoder and click 'Update' to the latest version. 4. Restart the application after update.
🔧 Temporary Workarounds
Restrict file processing
allAvoid opening untrusted or unknown files with Adobe Media Encoder.
Use application controls
windowsImplement software restriction policies or application allowlisting to block execution of untrusted files.
🧯 If You Can't Patch
- Disable or uninstall Adobe Media Encoder if not needed.
- Use sandboxing or virtualization to isolate the application when processing files.
🔍 How to Verify
Check if Vulnerable:
Check the version in Adobe Media Encoder: Help > About Adobe Media Encoder. If version is 24.0.2 or earlier, or 23.6 or earlier, it is vulnerable.Check Version:
On Windows: Check via Adobe Creative Cloud or in-app Help > About. On macOS: Use 'Get Info' on the application or in-app Help > About.Verify Fix Applied:
Verify the version is 24.0.3 or later, or 23.6.1 or later after updating.📡 Detection & Monitoring
Log Indicators:
- Application crashes or unexpected terminations in Adobe Media Encoder logs.
- File access events for suspicious or unknown media files.
Network Indicators:
- Unusual outbound connections from Adobe Media Encoder process post-file opening.
SIEM Query:
Example for Splunk: source="*adobe*" (event_type="crash" OR "Media Encoder") | stats count by host, user