CVE-2017-6028

EUVD-2017-15096
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 54%
Affected Products (NVD)
VendorProductVersion
schneider-electricmodicon_m241_firmware
𝑥
≤ 4.0.3.20
schneider-electricmodicon_m251_firmware
𝑥
≤ 4.0.3.20
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
http://www.securityfocus.com/bid/97254
https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02
http://www.securityfocus.com/bid/97254
https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02