CVE-2024-0799
📋 TL;DR
This authentication bypass vulnerability in Arcserve Unified Data Protection allows attackers to gain unauthorized access without valid credentials by exploiting a flaw in the login function. It affects organizations using vulnerable versions of Arcserve UDP for data protection and backup operations.
💻 Affected Systems
- Arcserve Unified Data Protection
📦 What is this software?
Udp by Arcserve
Udp by Arcserve
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of backup infrastructure leading to data theft, ransomware deployment, or destruction of backup data, potentially crippling disaster recovery capabilities.
Likely Case
Unauthorized access to backup management console allowing configuration changes, data exfiltration, or deployment of malware within the backup environment.
If Mitigated
Limited impact if system is isolated, monitored, and access is restricted, though authentication bypass remains a critical finding.
🎯 Exploit Status
CWE-287 indicates improper authentication - typically straightforward to exploit once details are known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Arcserve security advisory for specific patched versions
Vendor Advisory: https://www.arcserve.com/support-resources/security-advisories
Restart Required: Yes
Instructions:
1. Check current Arcserve UDP version. 2. Download and apply latest security patches from Arcserve support portal. 3. Restart Arcserve UDP services. 4. Verify patch installation.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to Arcserve UDP management interface
Use firewall rules to block external access to Arcserve UDP ports (typically 8014, 8015)
Access Control Lists
allImplement strict source IP restrictions for management interface
Configure network ACLs to allow only trusted management IPs
🧯 If You Can't Patch
- Isolate Arcserve UDP systems on separate VLAN with strict firewall rules
- Implement multi-factor authentication at network perimeter and monitor for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check Arcserve UDP version against affected versions (9.2, 8.1) and review system logs for authentication anomaliesCheck Version:
Check Arcserve UDP console or installation directory for version informationVerify Fix Applied:
Verify installed version is newer than affected versions and test authentication functionality📡 Detection & Monitoring
Log Indicators:
- Failed login attempts followed by successful access from same source
- Authentication bypass patterns in web server logs
- Unusual administrative actions from new IP addresses
Network Indicators:
- HTTP requests to /wizardLogin endpoint with unusual parameters
- Traffic to Arcserve UDP ports from unauthorized sources
SIEM Query:
source="arcserve_logs" AND (event_type="authentication" AND result="success" AND user_agent="*exploit*") OR (event_type="admin_action" AND src_ip NOT IN trusted_ips)