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CVE-2021-20988

Hilscher rcX RTOS: Wrong handling of the UDP checksum

Published: May 13, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-119
NVD MITRE
8.6CVSSHIGH
EPSS Score
1.0%
Top 42.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

In Hilscher rcX RTOS versions prios to V2.1.14.1 the actual UDP packet length is not verified against the length indicated by the packet. This may lead to a denial of service of the affected device.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-119

Affected Products

rcX RTOSHilscher
Embedded
ICS / OT / IoT / industrial-network
Ethernet IO Modules ICE1-16Pepperl+FuchsICS / OT / IoT
Ethernet IO Modules ICE1-8Pepperl+FuchsICS / OT / IoT
rcx rtoshilscher
Embedded
ICS / OT / IoT / industrial-network
ice1-16di-g60l-v1d firmwarepepperl-fuchsICS / OT / IoT
hilschercommercialDEICS / OT / IoTaka ethernet/ip adapter firmware, profinet io device
pepperl+fuchscommercialDEICS / OT / IoTaka pepperl fuchs
pepperl-fuchscommercialDEICS / OT / IoT
and 7 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://kb.hilscher.com/display/ISMS/2019-04-10+Wrong+handling+of+the+UDP+checksum
kb.hilscher.com
https://cert.vde.com/de-de/advisories/vde-2021-018
cert.vde.com

Timeline

Published
May 13, 2021
Last Updated
Nov 21, 2024

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