CVE-2021-31889

9.1CRITICAL

Key Information:

Vendor
Siemens
Status
Capital Embedded Ar Classic 431-422
Capital Embedded Ar Classic R20-11
Pluscontrol 1st Gen
Simotics Connect 400
Vendor
CVE Published:
9 November 2021

Summary

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). Malformed TCP packets with a corrupted SACK option leads to Information Leaks and Denial-of-Service conditions. (FSMD-2021-0015)

Affected Version(s)

Capital Embedded AR Classic 431-422 0

Capital Embedded AR Classic R20-11 0

PLUSCONTROL 1st Gen All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-11458...
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https://cert-portal.siemens.com/productcert/pdf/ssa-04411...
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https://cert-portal.siemens.com/productcert/pdf/ssa-62028...
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CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.