CVE-2018-4839

Description

A vulnerability has been identified in DIGSI 4 (All versions < V4.92), EN100 Ethernet module DNP3 variant (All versions < V1.05.00), EN100 Ethernet module IEC 104 variant (All versions), EN100 Ethernet module IEC 61850 variant (All versions < V4.30), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module PROFINET IO variant (All versions), Other SIPROTEC 4 relays (All versions), Other SIPROTEC Compact relays (All versions), SIPROTEC 4 7SD80 (All versions < V4.70), SIPROTEC 4 7SJ61 (All versions < V4.96), SIPROTEC 4 7SJ62 (All versions < V4.96), SIPROTEC 4 7SJ64 (All versions < V4.96), SIPROTEC 4 7SJ66 (All versions < V4.30), SIPROTEC Compact 7SJ80 (All versions < V4.77), SIPROTEC Compact 7SK80 (All versions < V4.77). An attacker with local access to the engineering system or in a privileged network position and able to obtain certain network traffic could possibly reconstruct access authorization passwords.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.14%
Vendor Advisory siemens.com
Affected: Siemens DIGSI 4
Affected: Siemens EN100 Ethernet module DNP3 variant
Affected: Siemens EN100 Ethernet module IEC 104 variant
Affected: Siemens EN100 Ethernet module IEC 61850 variant
Affected: Siemens EN100 Ethernet module Modbus TCP variant
Affected: Siemens EN100 Ethernet module PROFINET IO variant
Affected: Siemens Other SIPROTEC 4 relays
Affected: Siemens Other SIPROTEC Compact relays
Affected: Siemens SIPROTEC 4 7SD80
Affected: Siemens SIPROTEC 4 7SJ61
Affected: Siemens SIPROTEC 4 7SJ62
Affected: Siemens SIPROTEC 4 7SJ64
Affected: Siemens SIPROTEC 4 7SJ66
Affected: Siemens SIPROTEC Compact 7SJ80
Affected: Siemens SIPROTEC Compact 7SK80
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-203306.pdf patch vendor advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-067-01 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2018-4839?
CVE-2018-4839 has been scored as a medium severity vulnerability.
How to fix CVE-2018-4839?
To fix CVE-2018-4839, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-4839 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-4839 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-4839?
CVE-2018-4839 affects Siemens DIGSI 4, Siemens EN100 Ethernet module DNP3 variant, Siemens EN100 Ethernet module IEC 104 variant, Siemens EN100 Ethernet module IEC 61850 variant, Siemens EN100 Ethernet module Modbus TCP variant, Siemens EN100 Ethernet module PROFINET IO variant, Siemens Other SIPROTEC 4 relays, Siemens Other SIPROTEC Compact relays, Siemens SIPROTEC 4 7SD80, Siemens SIPROTEC 4 7SJ61, Siemens SIPROTEC 4 7SJ62, Siemens SIPROTEC 4 7SJ64, Siemens SIPROTEC 4 7SJ66, Siemens SIPROTEC Compact 7SJ80, Siemens SIPROTEC Compact 7SK80.
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