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SiemensCVE-2021-25663

HistoryApr 22, 2021 - 9:15 p.m.

CVE-2021-25663

2021-04-2221:15:09

CWE-835

siemens

web.nvd.nist.gov

cve-2021-25663

vulnerability

capital vstar

nucleus net

nucleus readystart

nucleus source code

ipv6

security issue

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.4

Confidence

High

EPSS

0.002

Percentile

55.2%

JSON

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (All versions including affected IPv6 stack). The function that processes IPv6 headers does not check the lengths of extension header options, allowing attackers to put this function into an infinite loop with crafted length values.

Affected configurations

Nvd

Node

siemenscapital_vstarMatch-

siemensnucleus_net

siemensnucleus_readystartRange<4.1.0

siemensnucleus_source_codeMatch-

Node

siemensnucleus_readystartRange<2017.02.4

VendorProductVersionCPE
siemenscapital_vstar-cpe:2.3:a:siemens:capital_vstar:-:*:*:*:*:*:*:*
siemensnucleus_net*cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*
siemensnucleus_readystart*cpe:2.3:a:siemens:nucleus_readystart:*:*:*:*:*:*:*:*
siemensnucleus_source_code-cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
siemens	capital_vstar	-	cpe:2.3:a:siemens:capital_vstar:-:::::::*
siemens	nucleus_net	*	cpe:2.3:a:siemens:nucleus_net::::::::
siemens	nucleus_readystart	*	cpe:2.3:a:siemens:nucleus_readystart::::::::
siemens	nucleus_source_code	-	cpe:2.3:a:siemens:nucleus_source_code:-:::::::*

CNA Affected

[
  {
    "vendor": "Siemens",
    "product": "Capital Embedded AR Classic 431-422",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "*",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "Capital Embedded AR Classic R20-11",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "V2303",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "Nucleus NET",
    "versions": [
      {
        "status": "affected",
        "version": "All versions"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "Nucleus ReadyStart V3",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "V2017.02.4",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "Nucleus ReadyStart V4",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "V4.1.0",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "Nucleus Source Code",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "*",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  }
]

References

cert-portal.siemens.com/productcert/html/ssa-248289.html

cert-portal.siemens.com/productcert/pdf/ssa-248289.pdf

us-cert.cisa.gov/ics/advisories/icsa-21-103-05

Social References

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.4

Confidence

High

EPSS

0.002

Percentile

55.2%

JSON

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