Detect Dassault Systèmes DELMIA Apriso Missing Authorization (CVE-2025-6205) in Sumo Logic CSE
Detects exploitation attempts targeting CVE-2025-6205, a missing authorization vulnerability (CWE-862) in Dassault Systèmes DELMIA Apriso. This vulnerability allows unauthenticated or low-privileged attackers to access protected resources or perform actions without proper authorization checks. Listed as a CISA KEV, indicating active exploitation in the wild.
MITRE ATT&CK
Sumo Detection Query
_sourceCategory=iis OR _sourceCategory=windows/security
| parse regex "(?<uri_path>/[^\s?]*)" nodrop
| parse regex "\s(?<method>GET|POST|PUT|DELETE|PATCH|HEAD)\s" nodrop
| parse regex "\s(?<status>\d{3})\s" nodrop
| parse regex "\s(?<username>[^\s]+)\s" nodrop
| where (uri_path matches "*Apriso*" or uri_path matches "*DELMIA*" or uri_path matches "*GlobalFluency*")
| where method in ("POST", "PUT", "DELETE", "PATCH")
| where (username = "-" or isBlank(username) or _raw matches "*bypass*" or _raw matches "*noauth*")
| where status in ("200", "201", "204", "301", "302")
| withtime _messagetime
| count by _sourceHost, uri_path, method, status, username
| sort by _count desc
| fields _sourceHost, uri_path, method, status, username, _countSumo Logic query to surface unauthenticated or authorization-bypassing POST/PUT/DELETE requests to DELMIA Apriso endpoints, grouped by source host for rapid triage.
Data Sources
Required Tables
False Positives & Tuning
- Approved integration systems using non-standard authentication flows
- Sumo Logic collector misconfiguration causing username field to appear blank
- Development or staging Apriso instances with reduced auth requirements
- Vendor-initiated support sessions using service accounts
Other platforms for CVE-2025-6205
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 1Unauthenticated HTTP POST to Apriso API Endpoint
Expected signal: IIS access log entry: POST /Apriso/api/v1/WorkOrders with username '-' or empty and HTTP response code 200/201/401/403. Network flow showing outbound connection to Apriso host on port 80 or 443.
- Test 2Apriso Endpoint Enumeration via Unauthenticated GET Scan
Expected signal: Multiple IIS log entries for sequential GET requests to /Apriso*, /DELMIA*, /GlobalFluency* paths from same source IP within a short time window.
- Test 3Authorization Bypass via Query Parameter Manipulation
Expected signal: IIS log entry with URI /Apriso/api/v1/Users?anonymous=true&auth=skip, method POST, and username '-'. Windows Security Event Log may show no corresponding authentication event.
- Test 4Repeated Authentication Failure on Apriso Service Account
Expected signal: Windows Security Event Log Event ID 4625 (failed logon) for TargetUserName=apriso_svc repeated 10 times within a short window. IIS 401 responses for POST to /Apriso/login.
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