Detect CVE-2025-67038 Lantronix EDS5000 Code Injection Exploitation in Sumo Logic CSE
Detects exploitation attempts targeting CVE-2025-67038, a code injection vulnerability (CWE-78/CWE-94) in Lantronix EDS5000 series device servers. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog and allows attackers to inject OS commands or code through the device management interface. The EDS5000 series includes EDS5008, EDS5016, and EDS5032 models commonly deployed as serial-to-network device servers in industrial and enterprise environments.
MITRE ATT&CK
Sumo Detection Query
_sourceCategory=firewall* OR _sourceCategory=webserver* OR _sourceCategory=network*
| where !("scanner" in _sourceHost) and !("pentest" in _sourceHost)
| parse regex field=_raw "(?i)(?:GET|POST|PUT|PATCH)\s+(?P<request_uri>\S+)" nodrop
| parse regex field=_raw "(?i)dest(?:ination)?[_\s]?port[=:\s]+(?P<dest_port>\d+)" nodrop
| where dest_port in ("80", "443", "8080", "9999", "30718")
| where request_uri matches "*/cgi-bin/*"
or request_uri matches "*/admin/*"
or request_uri matches "*/manage/*"
or request_uri matches "*/config/*"
| where request_uri matches "*;*"
or request_uri matches "*|*"
or request_uri matches "*%3B*"
or request_uri matches "*%7C*"
or request_uri matches "*%60*"
or request_uri matches "*../*"
| parse regex field=_raw "(?P<src_ip>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})" nodrop
| eval risk_level = if(request_uri matches "*;id*" or request_uri matches "*;ls*" or request_uri matches "*|sh*", "CRITICAL", "HIGH")
| count as attempt_count, last(_messageTime) as last_seen by src_ip, dest_port, risk_level
| sort by attempt_count descSumo Logic query detecting CVE-2025-67038 exploitation patterns in web server and firewall logs, looking for command injection sequences in HTTP requests to known Lantronix EDS5000 management ports.
Data Sources
Required Tables
False Positives & Tuning
- Authorized security testing tools targeting EDS5000 devices
- Management scripts using special characters in API calls
- URL-encoded parameters from legitimate web management consoles
- Network monitoring agents that perform periodic health checks with complex parameters
Other platforms for CVE-2025-67038
Testing Methodology
Validate this detection against 4 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1CVE-2025-67038 GET-based OS command injection probe
Expected signal: HTTP request to port 80 with URI containing '/cgi-bin/config.cgi' and query string containing ';id' should appear in firewall, proxy, or web server logs
- Test 2CVE-2025-67038 URL-encoded command injection bypass attempt
Expected signal: HTTP GET request to port 80 containing '%3B' in the query string targeting an admin management path
- Test 3CVE-2025-67038 POST-body code injection simulation
Expected signal: HTTP POST request to port 80 targeting '/manage/apply.cgi' with POST body containing ';wget' command injection — captured in proxy or WAF logs if POST body inspection is enabled
- Test 4CVE-2025-67038 path traversal combined with injection
Expected signal: HTTP GET request containing '../' path traversal sequences combined with 'cmd=id' injection parameter targeting EDS5000 management port
References (4)
- https://nvd.nist.gov/vuln/detail/CVE-2025-67038
- https://ltrxdev.atlassian.net/wiki/spaces/LTRXTS/pages/2538438657/Latest+Firmware+for+the+EDS5000+series+EDS5008+EDS5016+EDS5032
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk
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