Vulnerability CVE-2019-10931


Published: 2019-07-11

Description:
A vulnerability has been identified in SIPROTEC 5 device types 6MD85, 6MD86, 6MD89, 7UM85, 7SA87, 7SD87, 7SL87, 7VK87, 7SA82, 7SA86, 7SD82, 7SD86, 7SL82, 7SL86, 7SJ86, 7SK82, 7SK85, 7SJ82, 7SJ85, 7UT82, 7UT85, 7UT86, 7UT87 and 7VE85 with CPU variants CP300 and CP100 and the respective Ethernet communication modules (All versions < V7.90), All other SIPROTEC 5 device types with CPU variants CP300 and CP100 and the respective Ethernet communication modules (All versions), SIPROTEC 5 relays with CPU variants CP200 and the respective Ethernet communication modules (All versions), DIGSI 5 engineering software (All versions < V7.90). Specially crafted packets sent to port 443/TCP could cause a Denial of Service condition.

Type:

CWE-20

(Improper Input Validation)

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

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
None
None
Partial
Affected software
Siemens -> Digsi 5 engineering software 
Siemens -> Siprotec 5 digsi device driver 

 References:
https://cert-portal.siemens.com/productcert/pdf/ssa-899560.pdf

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