Vulnerability Details : CVE-2017-6028
An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Modicon M251, all firmware versions. Log-in credentials are sent over the network with Base64 encoding leaving them susceptible to sniffing. Sniffed credentials could then be used to log into the web application.
Products affected by CVE-2017-6028
- cpe:2.3:o:schneider-electric:modicon_m251_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:modicon_m241_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-6028
0.21%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 58 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-6028
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/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-2017-6028
-
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.Assigned by:
- ics-cert@hq.dhs.gov (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2017-6028
-
https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02
Schneider Electric Modicon PLCs | CISAThird Party Advisory;US Government Resource
-
http://www.securityfocus.com/bid/97254
Multiple Schneider Electric Modicon Products Weak Cryptography Multiple Security WeaknessesThird Party Advisory;VDB Entry
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