CVE-2023-1458
📋 TL;DR
CVE-2023-1458 is a command injection vulnerability in Ubiquiti EdgeRouter X's OSPF handler that allows authenticated attackers to execute arbitrary commands on affected devices. This affects EdgeRouter X version 2.0.9-hotfix.6. The vendor considers this a post-authentication issue rather than a vulnerability.
💻 Affected Systems
- Ubiquiti EdgeRouter X
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attacker to install persistent backdoors, intercept network traffic, pivot to internal networks, or brick the device.
Likely Case
Attacker with network access and valid credentials gains remote code execution to modify configurations, steal data, or disrupt network services.
If Mitigated
Limited impact if strong authentication controls, network segmentation, and proper access controls prevent unauthorized access to OSPF configuration.
🎯 Exploit Status
Exploit requires authentication but has been publicly disclosed. The vendor's position may reduce urgency for some organizations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None - vendor does not consider this a vulnerability
Restart Required: No
Instructions:
No official patch available. Consider upgrading to latest EdgeRouter firmware if available, though vendor may not specifically address this issue.
🔧 Temporary Workarounds
Disable OSPF if not needed
linuxRemove OSPF configuration from the router if the protocol is not required for your network.
configure
delete protocols ospf
commit
save
exit
Restrict OSPF access
linuxLimit which interfaces and networks can access OSPF services using firewall rules.
configure
set firewall name WAN_LOCAL rule 10 action drop
set firewall name WAN_LOCAL rule 10 protocol ospf
commit
save
exit
🧯 If You Can't Patch
- Implement strong authentication with complex passwords and multi-factor authentication if supported
- Segment network to isolate routers from untrusted networks and implement strict firewall rules
🔍 How to Verify
Check if Vulnerable:
Check if running EdgeRouter X version 2.0.9-hotfix.6 and OSPF is configured: show version | grep Version, show configuration | grep ospfCheck Version:
show version | grep VersionVerify Fix Applied:
Verify OSPF is disabled or restricted: show configuration | grep -A5 -B5 ospf📡 Detection & Monitoring
Log Indicators:
- Unusual OSPF configuration changes
- Unexpected command execution in system logs
- Authentication attempts to router management interface
Network Indicators:
- Unusual OSPF traffic patterns
- Unexpected outbound connections from router
- OSPF protocol anomalies
SIEM Query:
source="edgeos" AND (ospf OR "command injection" OR "unauthorized configuration")