CVE-2022-28821
📋 TL;DR
Adobe Framemaker has an out-of-bounds write vulnerability that allows arbitrary code execution when a user opens a malicious file. This affects users of Framemaker 2029u8 and earlier, and 2020u4 and earlier. Attackers can gain the same privileges as the current user through crafted documents.
💻 Affected Systems
- Adobe Framemaker
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the current user, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation leading to data exfiltration or malware installation on the affected workstation.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially only affecting the Framemaker process.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file). No public exploit code available as of knowledge cutoff.
🛠️ 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. Install available updates. 4. Restart Framemaker. Alternatively, download and install the latest version from Adobe's website.
🔧 Temporary Workarounds
Restrict file opening
allConfigure application control policies to restrict opening of untrusted Framemaker files.
User awareness training
allTrain users to avoid opening Framemaker files from untrusted sources.
🧯 If You Can't Patch
- Run Framemaker with least privilege user accounts
- Implement application sandboxing or virtualization for Framemaker
🔍 How to Verify
Check if Vulnerable:
Check Framemaker version via Help > About Adobe Framemaker. If version is 2029u8 or earlier, or 2020u4 or earlier, system is vulnerable.Check Version:
On Windows: Check Help > About in Framemaker GUI. No direct command-line version check available.Verify Fix Applied:
Verify version is 2029u9 or later, or 2020u5 or later after applying updates.📡 Detection & Monitoring
Log Indicators:
- Unexpected Framemaker crashes
- Suspicious file opens in Framemaker from unusual locations
Network Indicators:
- Downloads of Framemaker files from untrusted sources
SIEM Query:
EventID=4688 AND ProcessName LIKE '%framemaker%' AND CommandLine CONTAINS '.fm'