CVE-2021-25664

Published on: 04/22/2021 12:00:00 AM UTC

Last Modified on: 04/30/2021 01:39:00 PM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Certain versions of Nucleus 4 from Siemens contain the following vulnerability:

A vulnerability has been identified in Nucleus 4 (All versions < V4.1.0), Nucleus NET (All versions), Nucleus ReadyStart (All versions), Nucleus Source Code (versions including affected IPv6 stack), VSTAR (versions including affected IPv6 stack). The function that processes the Hop-by-Hop extension header in IPv6 packets and its options lacks any checks against the length field of the header, allowing attackers to put the function into an infinite loop by supplying arbitrary length values.

  • CVE-2021-25664 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.
  • Affected Vendor/Software: URL Logo Siemens - Nucleus 4 version All versions < V4.1.0
  • Affected Vendor/Software: URL Logo Siemens - Nucleus NET version All versions
  • Affected Vendor/Software: URL Logo Siemens - Nucleus ReadyStart version All versions
  • Affected Vendor/Software: URL Logo Siemens - Nucleus Source Code version versions including affected IPv6 stack
  • Affected Vendor/Software: URL Logo Siemens - VSTAR version versions including affected IPv6 stack

CVSS3 Score: 7.5 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE NONE HIGH

CVSS2 Score: 5 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE NONE PARTIAL

CVE References

Description Tags Link
Siemens Nucleus Products IPv6 Stack | CISA us-cert.cisa.gov
text/html
URL Logo MISC us-cert.cisa.gov/ics/advisories/icsa-21-103-05
cert-portal.siemens.com
application/pdf
URL Logo MISC cert-portal.siemens.com/productcert/pdf/ssa-248289.pdf

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationSiemensNucleus 4AllAllAllAll
ApplicationSiemensNucleus NetAllAllAllAll
ApplicationSiemensNucleus ReadystartAllAllAllAll
ApplicationSiemensNucleus Source Code-AllAllAll
ApplicationSiemensVstar-AllAllAll
  • cpe:2.3:a:siemens:nucleus_4:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:siemens:nucleus_readystart:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*:
  • cpe:2.3:a:siemens:vstar:-:*:*:*:*:*:*:*:

Social Mentions

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