Detect Dassault Systèmes DELMIA Apriso Missing Authorization (CVE-2025-6205) in Elastic Security
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
Elastic Detection Query
sequence by host.name with maxspan=5m
[network where process.name : ("apriso*", "delmia*", "GlobalFluency*", "Manufacturing*") and network.direction == "outgoing"]
[authentication where event.action in ("logged-in", "authentication_success") and user.name : ("*apriso*", "*delmia*", "*mes*", "anonymous")]
OR
any where
(
(event.dataset == "iis.access" and
url.path : ("*Apriso*", "*DELMIA*", "*GlobalFluency*") and
http.request.method in ("POST", "PUT", "DELETE") and
(user.name == "-" or user.name == "" or url.query : ("*bypass*", "*noauth*", "*anonymous*")) and
http.response.status_code in (200, 201, 301, 302))
)EQL sequence and event detection for unauthenticated access or suspicious authorization bypass patterns targeting DELMIA Apriso endpoints, correlated with process and authentication events.
Data Sources
Required Tables
False Positives & Tuning
- Legitimate anonymous access allowed for specific public-facing Apriso modules
- Load balancer health probes that appear as unauthenticated POST requests
- Integration agents running under generic service identities
- Bulk data sync jobs using token-based auth not reflected in standard log fields
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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