CVE-2018-4838
A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions < V4.30), EN100 Ethernet module DNP3 variant (All versions < V1.04), EN100 Ethernet module PROFINET IO variant (All versions), EN100 Ethernet module Modbus TCP…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions < V4.30), EN100 Ethernet module DNP3 variant (All versions < V1.04), EN100 Ethernet module PROFINET IO variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module IEC 104 variant (All versions < V1.22). The web interface (TCP/80) of affected devices allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions with known vulnerabilities.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.40% probability · 71th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Affected
- siemens/en100 ethernet module iec 104 firmware · siemens/en100 ethernet module dnp3 firmware · siemens/en100 ethernet module modbus tcp firmware · siemens/en100 ethernet module profinet io firmware · siemens/en100 ethernet module iec 61850 firmware
- Source
- productcert@siemens.com
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-845879.pdfPatch, Vendor Advisory
- https://www.securityfocus.com/bid/103379
- https://ics-cert.us-cert.gov/advisories/ICSA-18-067-01Third Party Advisory, US Government Resource
- https://cert-portal.siemens.com/productcert/pdf/ssa-845879.pdfPatch, Vendor Advisory
- https://www.securityfocus.com/bid/103379
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.