CVE-2023-26331

7.8 HIGH

📋 TL;DR

CVE-2023-26331 is an out-of-bounds read vulnerability in Adobe Dimension that could allow an attacker to read sensitive memory information. This could help bypass security mitigations like ASLR, potentially leading to further exploitation. Users of Adobe Dimension versions 3.4.7 and earlier are affected when opening malicious files.

💻 Affected Systems

Products:
  • Adobe Dimension
Versions: 3.4.7 and earlier
Operating Systems: Windows, macOS
Default Config Vulnerable: ⚠️ Yes
Notes: All default installations of affected versions are vulnerable when processing malicious files.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Memory disclosure could enable ASLR bypass, potentially leading to remote code execution or system compromise through follow-up attacks.

🟠

Likely Case

Information disclosure of memory contents, which could reveal sensitive data or facilitate more sophisticated attacks.

🟢

If Mitigated

Limited impact if proper file handling controls and user awareness are in place, preventing malicious file execution.

🌐 Internet-Facing: LOW - Requires user interaction to open malicious files, not directly exploitable over network.
🏢 Internal Only: MEDIUM - Internal users could be targeted via phishing or malicious files, but requires user interaction.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires user interaction (opening malicious file) and understanding of memory layout for effective ASLR bypass.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 3.4.8 or later

Vendor Advisory: https://helpx.adobe.com/security/products/dimension/apsb23-20.html

Restart Required: Yes

Instructions:

1. Open Adobe Dimension. 2. Go to Help > Check for Updates. 3. Follow prompts to install version 3.4.8 or later. 4. Restart the application.

🔧 Temporary Workarounds

Restrict file handling

all

Configure system to only open trusted .dim files and block suspicious file sources

User awareness training

all

Train users to avoid opening untrusted .dim files from unknown sources

🧯 If You Can't Patch

  • Implement application whitelisting to restrict execution of Adobe Dimension to trusted users only
  • Deploy endpoint protection that can detect and block malicious .dim file execution

🔍 How to Verify

Check if Vulnerable:

Check Adobe Dimension version: Open Adobe Dimension, go to Help > About Adobe Dimension

Check Version:

Not applicable - check via application GUI

Verify Fix Applied:

Verify version is 3.4.8 or later in Help > About Adobe Dimension

📡 Detection & Monitoring

Log Indicators:

  • Application crashes of Adobe Dimension
  • Unusual file access patterns for .dim files

Network Indicators:

  • Downloads of .dim files from untrusted sources

SIEM Query:

source="*adobe*" AND (event="crash" OR file_extension=".dim")

🔗 References

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