Auth bypass in Siemens Simatic Cp 44x-1 Redundant Network Access Modules
CVE-2017-6868
An Improper Authentication issue was discovered in Siemens SIMATIC CP 44x-1 RNA, all versions prior to 1.4.1. An unauthenticated remote attacker may be able to perform administrative actions on the Communication Process (CP) of the RNA series module, if network access to Port 102/TCP is available and the configuration file for the CP is stored on the RNA's CPU.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.042 (90.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: 0.000
Affected products
- Siemens Simatic Cp 44x-1 Redundant Network Access Modules
- Siemens Simatic Cp 44x-1 Redundant Network Access Modules — versions Siemens SIMATIC CP 44x-1 Redundant Network Access Modules
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/99234 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1038788 (VDB Entry, Third Party Advisory, vdb-entry)
- ics-cert.us-cert.gov/advisories/ICSA-17-173-01 (US Government Resource, Third Party Advisory)
- www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-126840.pdf
Frequently asked questions
- What is CVE-2017-6868?
- CVE-2017-6868 is a high-severity vulnerability in Siemens Simatic Cp 44x-1 Redundant Network Access Modules, classified under Improper Authentication. CVSS score: 8.1/10. Published 2017-07-07.
- How severe is CVE-2017-6868?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2017-6868 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.