CVE-2022-28823
📋 TL;DR
CVE-2022-28823 is a use-after-free vulnerability in Adobe Framemaker that could allow an attacker to execute arbitrary code on a victim's system when they open a malicious file. This affects users of Adobe Framemaker versions 2029u8 and earlier, and 2020u4 and earlier. Successful exploitation requires user interaction to open a specially crafted file.
💻 Affected Systems
- Adobe Framemaker
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the victim's computer in the context of the current user, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or arbitrary code execution leading to malware installation, data exfiltration, or system disruption for individual users who open malicious files.
If Mitigated
Limited impact with proper application sandboxing, least privilege user accounts, and file execution restrictions preventing successful exploitation.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and knowledge of memory corruption techniques. No public exploit code has been reported as of the advisory date.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2029u9 and 2020u5
Vendor Advisory: https://helpx.adobe.com/security/products/framemaker/apsb22-27.html
Restart Required: Yes
Instructions:
1. Open Adobe Framemaker. 2. Go to Help > Check for Updates. 3. Follow prompts to install the latest update. 4. Alternatively, download the update directly from Adobe's website. 5. Restart the application after installation.
🔧 Temporary Workarounds
Disable automatic file opening
allConfigure Framemaker to not automatically open files and require explicit user confirmation for all file operations.
Restrict file execution
allUse application control policies to restrict execution of untrusted Framemaker files.
🧯 If You Can't Patch
- Implement strict email filtering to block suspicious attachments and educate users about the risks of opening untrusted files.
- Run Framemaker with least privilege user accounts and enable application sandboxing where available to limit potential damage.
🔍 How to Verify
Check if Vulnerable:
Check Framemaker version via Help > About Adobe Framemaker. If version is 2029u8 or earlier, or 2020u4 or earlier, the system is vulnerable.Check Version:
On Windows: Check Help > About. On macOS: Check Framemaker > About Framemaker.Verify Fix Applied:
Verify version is 2029u9 or later, or 2020u5 or later after applying the update.📡 Detection & Monitoring
Log Indicators:
- Unexpected application crashes in Framemaker logs
- Suspicious file access patterns
- Process creation from Framemaker with unusual command lines
Network Indicators:
- Outbound connections from Framemaker to unknown IPs post-file opening
- DNS requests to suspicious domains
SIEM Query:
source="framemaker.log" AND (event_type="crash" OR event_type="error") | stats count by host, user