Auth bypass in Schneider Electric Modicon Modbus Protocol
CVE-2017-6034
An authentication bypass by capture-replay issue was discovered in Schneider Electric Modicon Modbus Protocol. Sensitive information is transmitted in cleartext in the Modicon Modbus protocol, which may allow an attacker to replay the following commands: run, stop, upload, and download.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.055 (92.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.052 · newest: 0.055 · change: +0.003
Affected products
- Schneider Electric Modicon Modbus Protocol — versions all versions
- Schneider-Electric Modbus
- Schneider-Electric Modbus Firmware
- Schneider Electric Modicon Modbus Protocol — versions Schneider Electric Modicon Modbus Protocol
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ics-cert.us-cert.gov/advisories/ICSA-17-101-01 (US Government Resource, Third Party Advisory)
- www.securityfocus.com/bid/97562 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2017/icsa-17-101-01.js…
- www.se.com/us/en/download/document/SEVD-2017-065-01/
Frequently asked questions
- What is CVE-2017-6034?
- CVE-2017-6034 is a critical-severity vulnerability in Schneider Electric Modicon Modbus Protocol, classified under Authentication Bypass by Capture-replay. CVSS score: 9.8/10. Published 2017-06-30.
- How severe is CVE-2017-6034?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-6034 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.