Vulnerability CVE-2017-7905


Published: 2017-06-29   Modified: 2017-06-30

Description:
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.

Type:

CWE-522

(Insufficiently Protected Credentials)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
GE -> Multilin sr 489 generator protection relay firmware 
GE -> Multilin urplus c90 firmware 
GE -> Multilin urplus d90 firmware 
GE -> Multilin sr 745 transformer protection relay firmware 
GE -> Multilin sr 760 feeder protection relay firmware 
GE -> Multilin universal relay firmware 
GE -> Multilin sr 369 motor protection relay firmware 
GE -> Multilin urplus b95 firmware 
GE -> Multilin sr 750 feeder protection relay firmware 
GE -> Multilin sr 469 motor protection relay firmware 

 References:
http://www.securityfocus.com/bid/98063
https://ics-cert.us-cert.gov/advisories/ICSA-17-117-01A

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