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CVE-2021-31883

Published: Nov 9, 2021Updated: Nov 21, 2024 Sources: CVE List NVD csafCWE-119
7.1HIGH
NVD MITRE
EPSS Score
1.5%
Top 27.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). When processing a DHCP ACK message, the DHCP client application does not validate the length of the Vendor option(s), leading to Denial-of-Service conditions. (FSMD-2021-0013)

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:LI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-119

Affected Products

Siemens
commercial·DEaka siemens ag
Capital Embedded AR Classic 431-422
ICS / OT / IoT
Capital Embedded AR Classic R20-11
ICS / OT / IoT
capital vstar
ICS / OT / IoT
nucleus net
ICS / OT / IoT
nucleus readystart v3
ICS / OT / IoT
nucleus source code
ICS / OT / IoT
apogee modular building controller firmware
ICS / OT / IoT
apogee modular equiment controller firmware
ICS / OT / IoT
and 4 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf
cert-portal.siemens.com
and 28 more references View all →

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