CVE-2021-40735

7.8 HIGH

📋 TL;DR

A memory corruption vulnerability in Adobe Audition versions 14.4 and earlier could allow attackers to execute arbitrary code on affected systems. Exploitation requires user interaction, such as opening a malicious file. Users running vulnerable versions of Adobe Audition are at risk.

💻 Affected Systems

Products:
  • Adobe Audition
Versions: 14.4 and earlier
Operating Systems: Windows, macOS
Default Config Vulnerable: ⚠️ Yes
Notes: All installations of affected versions are vulnerable regardless of configuration settings.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise with attacker gaining full control of the user's computer, allowing data theft, ransomware deployment, or lateral movement within networks.

🟠

Likely Case

Local privilege escalation leading to data exfiltration, malware installation, or persistence mechanisms being established on the compromised system.

🟢

If Mitigated

Limited impact due to user account restrictions, with potential data loss but no system-wide compromise if proper privilege separation exists.

🌐 Internet-Facing: LOW - Exploitation requires user interaction with malicious files, not directly exploitable over network interfaces.
🏢 Internal Only: MEDIUM - Internal users could be targeted via phishing or malicious files shared on internal networks, but requires user interaction.

🎯 Exploit Status

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

Exploitation requires user interaction (opening malicious file) and memory corruption techniques. No public exploit code has been reported.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 14.5 or later

Vendor Advisory: https://helpx.adobe.com/security/products/audition/apsb21-92.html

Restart Required: Yes

Instructions:

1. Open Adobe Creative Cloud application. 2. Navigate to 'Apps' section. 3. Find Adobe Audition and click 'Update'. 4. Alternatively, download latest version from Adobe website. 5. Restart computer after installation.

🔧 Temporary Workarounds

Restrict file execution

all

Prevent execution of untrusted Audition project files

Application control

windows

Use application whitelisting to restrict Audition to trusted directories

🧯 If You Can't Patch

  • Restrict user privileges to standard user accounts (not administrator)
  • Implement application sandboxing or virtualization for Adobe Audition usage

🔍 How to Verify

Check if Vulnerable:

Open Adobe Audition, go to Help > About Audition, check if version is 14.4 or earlier

Check Version:

On Windows: wmic product where name="Adobe Audition" get version
On macOS: /Applications/Adobe Audition 2021/Adobe Audition 2021.app/Contents/Info.plist | grep -A1 CFBundleShortVersionString

Verify Fix Applied:

Verify version is 14.5 or later in Help > About Audition

📡 Detection & Monitoring

Log Indicators:

  • Unexpected Audition crashes
  • Suspicious file opens in Audition
  • Unusual process creation from Audition

Network Indicators:

  • Outbound connections from Audition to unknown IPs
  • DNS requests for suspicious domains

SIEM Query:

Process Creation where Image contains "Audition" AND ParentImage not in ("explorer.exe", "Creative Cloud.exe")

🔗 References

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