Vulnerability Details : CVE-2018-4840
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). The device engineering mechanism allows an unauthenticated remote user to upload a modified device configuration overwriting access authorization passwords.
Products affected by CVE-2018-4840
- cpe:2.3:o:siemens:en100_ethernet_module_iec_104_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:en100_ethernet_module_dnp3_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:en100_ethernet_module_modbus_tcp_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:en100_ethernet_module_profinet_io_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:en100_ethernet_module_iec_61850_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:siprotec_compact_7sj80_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:siprotec_compact_7sk80_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:siprotec_4_7sj66_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:digsi_4:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-4840
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 49 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-4840
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2018-4840
-
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.Assigned by:
- nvd@nist.gov (Secondary)
- productcert@siemens.com (Primary)
References for CVE-2018-4840
-
https://cert-portal.siemens.com/productcert/pdf/ssa-203306.pdf
Patch;Vendor Advisory
-
https://ics-cert.us-cert.gov/advisories/ICSA-18-067-01
Siemens SIPROTEC 4, SIPROTEC Compact, DIGSI 4, and EN100 Ethernet Module (Update C) | CISAThird Party Advisory;US Government Resource
Jump to