CVE-2017-7905

moderate-risk
Published 2017-06-30

A Weak Cryptography for Passwords issue was discovered in General Electric (GE) Multilin SR 750 Feeder Protection Relay, firmware versions prior to Version 7.47; SR 760 Feeder Protection Relay, firmware versions prior to Version 7.47; SR 469 Motor Protection Relay, firmware versions prior to Version 5.23; SR 489 Generator Protection Relay, firmware versions prior to Version 4.06; SR 745 Transformer Protection Relay, firmware versions prior to Version 5.23; SR 369 Motor Protection Relay, all firmware versions; Multilin Universal Relay, firmware Version 6.0 and prior versions; and Multilin URplus (D90, C90, B95), all versions. Ciphertext versions of user passwords were created with a non-random initialization vector leaving them susceptible to dictionary attacks. Ciphertext of user passwords can be obtained from the front LCD panel of affected products and through issued Modbus commands.

Do I need to act?

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0.20% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (10)

Multilin Sr 469 Motor Protection Relay Firmware
Multilin Sr 745 Transformer Protection Relay Firmware
Multilin Sr 369 Motor Protection Relay Firmware
Multilin Urplus D90 Firmware
Multilin Urplus B95 Firmware
Multilin Sr 750 Feeder Protection Relay Firmware
Multilin Sr 760 Feeder Protection Relay Firmware
Multilin Sr 489 Generator Protection Relay Firmware
Multilin Universal Relay Firmware
Multilin Urplus C90 Firmware

Affected Vendors

Ge
49
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 1/34 · Minimal
Exposure 16/34 · Moderate