XXE in Ocpfoundation Local Discovery Server
CVE-2017-12069
An XXE vulnerability has been identified in OPC Foundation UA .NET Sample Code before 2017-03-21 and Local Discovery Server (LDS) before 1.03.367. Among the affected products are Siemens SIMATIC PCS7 (All versions V8.1 and earlier), SIMATIC WinCC (All versions < V7.4 SP1), SIMATIC WinCC Runtime Professional (All versions < V14 SP1), SIMATIC NET PC Software, and SIMATIC IT Production Suite. By sending specially crafted packets to the OPC Discovery Server at port 4840/tcp, an attacker might cause the system to access various resources chosen by the attacker.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.
EPSS exploit prediction
EPSS: 0.029 (86.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.030 · newest: 0.029 · change: -0.001
Affected products
Weakness classification (CWE)
References
- opcfoundation-onlineapplications.org/faq/SecurityBulletins/OPC_Foundation_Secur… (Patch, Vendor Advisory)
- www.securitytracker.com/id/1039510 (vdb-entry)
- www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-535640.pdf (Vendor Advisory)
- www.securityfocus.com/bid/100559 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-12069?
- CVE-2017-12069 is a high-severity vulnerability in Ocpfoundation Local Discovery Server, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.2/10. Published 2017-08-30.
- How severe is CVE-2017-12069?
- High severity. CVSS v3 base score is 8.2 out of 10.