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cvelistSiemensCVELIST:CVE-2021-25663
HistoryApr 22, 2021 - 8:42 p.m.

CVE-2021-25663

2021-04-2220:42:20
CWE-835
siemens
www.cve.org
6
vulnerability
capital embedded ar classic
nucleus net
ipv6
crafted length values

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/E:P/RL:O/RC:C

AI Score

7.7

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.

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"
  }
]

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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/E:P/RL:O/RC:C

AI Score

7.7

Confidence

High

EPSS

0.002

Percentile

55.2%

JSON
Related for CVELIST:CVE-2021-25663
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