CVE-2021-31883

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)

Category

7.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.41% Top 25%
Vendor Advisory siemens.com Vendor Advisory siemens.com
Affected: Siemens Capital Embedded AR Classic 431-422
Affected: Siemens Capital Embedded AR Classic R20-11
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf vendor advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf vendor advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf
https://cert-portal.siemens.com/productcert/html/ssa-114589.html
https://cert-portal.siemens.com/productcert/html/ssa-044112.html
https://cert-portal.siemens.com/productcert/html/ssa-620288.html

Frequently Asked Questions

What is the severity of CVE-2021-31883?
CVE-2021-31883 has been scored as a high severity vulnerability.
How to fix CVE-2021-31883?
To fix CVE-2021-31883, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31883 being actively exploited in the wild?
It is possible that CVE-2021-31883 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-31883?
CVE-2021-31883 affects Siemens Capital Embedded AR Classic 431-422, Siemens Capital Embedded AR Classic R20-11.
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