CVE-2017-6026

A Use of Insufficiently Random Values issue was discovered in Schneider Electric Modicon PLCs Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The session numbers generated by the web application are lacking randomization and are shared between several users. This may allow a current session to be compromised.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
icscertCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 94%
VendorProductVersion
schneider-electricmodicon_m251_firmware
𝑥
≤ 4.0.3.20
schneider-electricmodicon_m241_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
https://www.exploit-db.com/exploits/45918/
http://www.securityfocus.com/bid/97254
https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02
https://www.exploit-db.com/exploits/45918/