Buffer Overflow Vulnerability in EN100 Ethernet Module by Siemens
CVE-2019-13942

7.5HIGH

Key Information:

Vendor

Siemens Ag
Status
En100 Ethernet Module Dnp3 Variant
En100 Ethernet Module Iec 61850 Variant
En100 Ethernet Module Iec104 Variant
En100 Ethernet Module Modbus Tcp Variant
Vendor
CVE Published:
12 December 2019

What is CVE-2019-13942?

A buffer overflow vulnerability in the Siemens EN100 Ethernet module affects all versions of several variants including DNP3, IEC 61850 (below v4.37), IEC104, Modbus TCP, and PROFINET IO. This vulnerability allows unauthorized users to exploit the webserver of the affected modules by sending specially crafted packets, potentially leading to a Denial-of-Service condition. If exploited, devices may require a manual restart for full recovery. At the time of advisory publication, there was no known public exploitation of this issue.

Affected Version(s)

EN100 Ethernet module DNP3 variant All versions

EN100 Ethernet module IEC 61850 variant All versions < V4.37

EN100 Ethernet module IEC104 variant All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-41897...
x_refsource_MISC
https://www.us-cert.gov/ics/advisories/icsa-19-344-07
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2019-13942 : Buffer Overflow Vulnerability in EN100 Ethernet Module by Siemens