Vulnerability Details : 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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2017-6034
- cpe:2.3:o:schneider-electric:modbus_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-6034
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-6034
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2017-6034
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
-
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).Assigned by: ics-cert@hq.dhs.gov (Secondary)
References for CVE-2017-6034
-
http://www.securityfocus.com/bid/97562
Schneider Electric Modicon Modbus Protocol Multiple Authentication Bypass VulnerabilitiesThird Party Advisory;VDB Entry
-
https://ics-cert.us-cert.gov/advisories/ICSA-17-101-01
Schneider Electric Modicon Modbus Protocol | CISAUS Government Resource;Third Party Advisory
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