CVE-2022-31749
📋 TL;DR
CVE-2022-31749 is an argument injection vulnerability in WatchGuard Fireware OS that allows authenticated remote attackers with unprivileged credentials to read or upload files to limited arbitrary locations on affected appliances. This affects WatchGuard Firebox and XTM appliances running vulnerable versions of Fireware OS. Attackers can exploit this to potentially access sensitive files or write malicious content.
💻 Affected Systems
- WatchGuard Firebox
- WatchGuard XTM
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
An attacker could read sensitive configuration files, write malicious scripts to limited locations, or potentially escalate privileges by manipulating system files, leading to full device compromise.
Likely Case
Attackers with valid credentials could read sensitive configuration data or upload malicious files to limited directories, potentially enabling further attacks or data exfiltration.
If Mitigated
With proper access controls and network segmentation, impact is limited to file operations within the attacker's limited permissions scope.
🎯 Exploit Status
Exploitation requires valid credentials but is straightforward once authenticated. Public technical details available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fireware OS 12.8.1, 12.1.4, or 12.5.10
Vendor Advisory: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2022-00019
Restart Required: Yes
Instructions:
1. Log into WatchGuard System Manager. 2. Navigate to System > Upgrade. 3. Download and install the appropriate patched version (12.8.1, 12.1.4, or 12.5.10). 4. Reboot the appliance after installation completes.
🔧 Temporary Workarounds
Restrict administrative access
allLimit administrative access to trusted IP addresses and users only
Implement credential hardening
allEnforce strong password policies and multi-factor authentication for all administrative accounts
🧯 If You Can't Patch
- Restrict administrative interface access to trusted networks only
- Implement network segmentation to isolate affected appliances from critical systems
🔍 How to Verify
Check if Vulnerable:
Check Fireware OS version via WatchGuard System Manager or CLI. If version is below 12.8.1, 12.1.4, or 12.5.10, the system is vulnerable.Check Version:
show version (via CLI) or check in WatchGuard System Manager under System > StatusVerify Fix Applied:
Verify Fireware OS version is 12.8.1, 12.1.4, or 12.5.10 or higher after patching.📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns via diagnose/import pac commands
- Multiple failed authentication attempts followed by successful login and file operations
Network Indicators:
- Unusual traffic patterns to administrative interfaces from unexpected sources
SIEM Query:
source="watchguard" AND (command="diagnose" OR command="import pac") AND (action="read" OR action="write")