CVE-2021-25664

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
A vulnerability has been identified in Capital VSTAR (Versions including affected IPv6 stack), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (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.
Overview
  • CVE ID
  • CVE-2021-25664
  • Assigner
  • productcert@siemens.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-22T21:15:09
  • Last Modified Date
  • 2022-05-01T01:18:11
Weakness Enumerations
CWE URL
CWE-835 http://cwe.mitre.org/data/definitions/835.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:siemens:capital_vstar:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:nucleus_net:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:nucleus_readystart_v3:*:*:*:*:*:*:*:* 1 OR 2017.02.4
cpe:2.3:a:siemens:nucleus_readystart_v4:*:*:*:*:*:*:*:* 1 OR 4.1.0
cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-248289.pdf Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-05 Third Party Advisory US Government Resource
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-25664
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25664
History
Created Old Value New Value Data Type Notes
2022-05-08 06:20:16 Added to TrackCVE
2022-12-06 02:24:48 2021-04-22T21:15Z 2021-04-22T21:15:09 CVE Published Date updated
2022-12-06 02:24:48 2022-05-01T01:18:11 CVE Modified Date updated
2022-12-06 02:24:48 Analyzed Vulnerability Status updated