CVE-2024-8772
📋 TL;DR
This vulnerability in Axis devices allows authenticated attackers with operator or administrator privileges to exploit a race condition in the VAPIX API's managedoverlayimages.cgi endpoint. This can block access to the overlay configuration page in the web interface. Only users with privileged service accounts on affected Axis devices are at risk.
💻 Affected Systems
- Axis network cameras and video encoders with VAPIX API
⚠️ 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 with privileged credentials could persistently block legitimate administrators from configuring overlay images, potentially disrupting surveillance monitoring or forensic capabilities.
Likely Case
Malicious insiders or compromised accounts could temporarily disrupt overlay configuration management, requiring device restart or administrative intervention to restore access.
If Mitigated
With proper access controls and monitoring, impact is limited to temporary service disruption that can be quickly detected and remediated.
🎯 Exploit Status
Requires race condition exploitation and privileged credentials. No public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patched AXIS OS versions as specified in Axis security advisory
Vendor Advisory: https://www.axis.com/dam/public/permalink/231072/cve-2024-8772pdf-en-US_InternalID-231072.pdf
Restart Required: Yes
Instructions:
1. Download patched AXIS OS version from Axis website. 2. Backup device configuration. 3. Apply firmware update via web interface or Axis Device Manager. 4. Restart device. 5. Verify update successful.
🔧 Temporary Workarounds
Restrict VAPIX API Access
linuxLimit network access to VAPIX API endpoints to trusted management networks only.
iptables -A INPUT -p tcp --dport 80 -s ! TRUSTED_NETWORK -j DROP
iptables -A INPUT -p tcp --dport 443 -s ! TRUSTED_NETWORK -j DROP
Strengthen Authentication
allEnforce strong passwords, multi-factor authentication, and regular credential rotation for privileged accounts.
🧯 If You Can't Patch
- Implement network segmentation to isolate Axis devices from untrusted networks
- Enable detailed logging and monitoring for VAPIX API access attempts
🔍 How to Verify
Check if Vulnerable:
Check AXIS OS version against patched versions listed in Axis advisory. Test if managedoverlayimages.cgi endpoint is accessible with privileged credentials.Check Version:
curl -k https://<device_ip>/axis-cgi/admin/param.cgi?action=list&group=Properties.Firmware.VersionVerify Fix Applied:
Verify AXIS OS version is updated to patched version. Test overlay configuration page functionality remains accessible after multiple rapid requests.📡 Detection & Monitoring
Log Indicators:
- Multiple rapid requests to managedoverlayimages.cgi endpoint
- Failed overlay configuration access attempts from legitimate users
Network Indicators:
- Unusual burst of requests to VAPIX API from single source
- Traffic patterns suggesting race condition exploitation
SIEM Query:
source="axis_device" AND (uri="/axis-cgi/managedoverlayimages.cgi" AND count>10 WITHIN 1s)