FKIE_CVE-2021-34736

Vulnerability from fkie_nvd - Published: 2021-10-21 03:15 - Updated: 2026-06-17 03:56
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Software could allow an unauthenticated, remote attacker to cause the web-based management interface to unexpectedly restart. The vulnerability is due to insufficient input validation on the web-based management interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to cause the interface to restart, resulting in a denial of service (DoS) condition.
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imc-gui-dos-TZjrFyZhVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imc-gui-dos-TZjrFyZhVendor Advisory
Impacted products
Vendor Product Version
cisco unified_computing_system *
cisco unified_computing_system *
cisco ucs_c125_m5 -
cisco ucs_c22_m3 -
cisco ucs_c220_m3 -
cisco ucs_c220_m4 -
cisco ucs_c220_m5 -
cisco ucs_c225_m6 -
cisco ucs_c24_m3 -
cisco ucs_c240_m3 -
cisco ucs_c240_m5 -
cisco ucs_c240_sd_m5 -
cisco ucs_c245_m6 -
cisco ucs_c260_m2 -
cisco ucs_c3160 -
cisco ucs_c3260 -
cisco ucs_c420_m3 -
cisco ucs_c4200 -
cisco ucs_c460_m2 -
cisco ucs_c460_m4 -
cisco ucs_c480_m5 -
cisco ucs_c480_ml_m5 -
cisco ucs_c890_m5 -
cisco unified_computing_system *
cisco ucs_s3260 -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Cisco Unified Computing System (Managed)",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:unified_computing_system:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "12A905D0-ACBA-453C-A517-CEB0D98E836C",
              "versionEndExcluding": "4.1\\(2g\\)",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cisco:unified_computing_system:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2988EA7D-D1B7-4A45-A7E1-F4CDCE8A449B",
              "versionEndExcluding": "4.2\\(1b\\)",
              "versionStartIncluding": "4.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c125_m5:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "ADD4A429-F168-460B-A964-8F1BD94C6387",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c22_m3:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "DE87B6DD-FDE4-4484-84C7-EAF383EB6BAC",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c220_m3:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "5368DBDD-B482-4705-A186-6D5B5B21B754",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c220_m4:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "CD45BB8A-BC47-4DFB-9027-93ACF0DA302B",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c220_m5:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "855E1346-BACC-4485-9534-7C830FCFD54B",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c225_m6:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "A9C38B65-9A77-40BF-BE77-2B307A0AFC1D",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c24_m3:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "9403C407-8BE9-416E-94C0-3CB6F732C592",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c240_m3:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "1CB75EF7-5889-4D6F-A488-F1EB30596F9F",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c240_m5:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "F262ADAB-74DC-466B-983A-C49E4BAC22C0",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c240_sd_m5:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "D9768750-2981-4F7B-82B5-8BB64FD5AAD5",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c245_m6:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "7B319520-A217-4070-ABAF-29DCE6EDB6D2",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c260_m2:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "A6B63849-1831-4564-9F9C-BDBDA267E9AF",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c3160:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "9E1C3AF7-DF08-494D-B3FA-001CC9114DC2",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c3260:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "22B85A56-2058-42C3-87EF-F9A7DD4726B1",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c420_m3:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "CF2C12B1-A75B-450A-BD31-53EF15F1F4A0",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c4200:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "BD25964B-08B7-477E-A507-5FE5EE7CD286",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c460_m2:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "1311C886-01AA-45DA-9479-0287C935DE91",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c460_m4:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "E6B4CF9E-A757-4F4B-931A-538FC2F5331A",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c480_m5:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "0D0B0FA5-996F-4F25-8AAB-603CB46175F9",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c480_ml_m5:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "9E829EF2-3BFE-48CD-A0CE-8DFA20440EF7",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ucs_c890_m5:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "87A68188-3C0E-422A-A674-0E8BF18E7091",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:unified_computing_system:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4DAF0295-8C01-4C4D-842E-46387B239C81",
              "versionEndExcluding": "4.1\\(3e\\)",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:ucs_s3260:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "2FDC8A69-0914-44C1-8AEA-262E0A285C81",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Software could allow an unauthenticated, remote attacker to cause the web-based management interface to unexpectedly restart. The vulnerability is due to insufficient input validation on the web-based management interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to cause the interface to restart, resulting in a denial of service (DoS) condition."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la interfaz de administraci\u00f3n basada en web de Cisco Integrated Management Controller (IMC) Software podr\u00eda permitir a un atacante remoto no autenticado causar el reinicio inesperado de la interfaz de administraci\u00f3n basada en web. La vulnerabilidad es debido a que la interfaz de administraci\u00f3n basada en web no comprueba suficientemente las entradas. Un atacante podr\u00eda aprovechar esta vulnerabilidad mediante el env\u00edo de una petici\u00f3n HTTP dise\u00f1ada a un dispositivo afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar el reinicio de la interfaz, resultando en una condici\u00f3n de denegaci\u00f3n de servicio (DoS)"
    }
  ],
  "id": "CVE-2021-34736",
  "lastModified": "2026-06-17T03:56:27.483",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-34736",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-11-07T21:44:36.610487Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2021-10-21T03:15:06.890",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imc-gui-dos-TZjrFyZh"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imc-gui-dos-TZjrFyZh"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.