CVE-2021-34761
Vulnerability from cvelistv5
Published
2021-10-27 18:55
Modified
2024-11-07 21:44
Severity ?
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Summary
Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability
References
ykramarz@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVcVendor Advisory
Impacted products
CiscoCisco Firepower Threat Defense Software
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:19:48.218Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20211027 Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-34761",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-07T21:39:50.562966Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-07T21:44:29.552Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco Firepower Threat Defense Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2021-10-27T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite or append arbitrary data to system files using root-level privileges. The attacker must have administrative credentials on the device. This vulnerability is due to incomplete validation of user input for a specific CLI command. An attacker could exploit this vulnerability by authenticating to the device with administrative privileges and issuing a CLI command with crafted user parameters. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-73",
              "description": "CWE-73",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-10-27T18:55:30",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "20211027 Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability",
          "tags": [
            "vendor-advisory",
            "x_refsource_CISCO"
          ],
          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc"
        }
      ],
      "source": {
        "advisory": "cisco-sa-ftd-file-write-SHVcmQVc",
        "defect": [
          [
            "CSCvy41757"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "DATE_PUBLIC": "2021-10-27T16:00:00",
          "ID": "CVE-2021-34761",
          "STATE": "PUBLIC",
          "TITLE": "Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Cisco Firepower Threat Defense Software",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Cisco"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability in Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite or append arbitrary data to system files using root-level privileges. The attacker must have administrative credentials on the device. This vulnerability is due to incomplete validation of user input for a specific CLI command. An attacker could exploit this vulnerability by authenticating to the device with administrative privileges and issuing a CLI command with crafted user parameters. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges."
            }
          ]
        },
        "exploit": [
          {
            "lang": "en",
            "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
          }
        ],
        "impact": {
          "cvss": {
            "baseScore": "4.4",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-73"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "20211027 Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability",
              "refsource": "CISCO",
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc"
            }
          ]
        },
        "source": {
          "advisory": "cisco-sa-ftd-file-write-SHVcmQVc",
          "defect": [
            [
              "CSCvy41757"
            ]
          ],
          "discovery": "INTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2021-34761",
    "datePublished": "2021-10-27T18:55:30.453403Z",
    "dateReserved": "2021-06-15T00:00:00",
    "dateUpdated": "2024-11-07T21:44:29.552Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-34761\",\"sourceIdentifier\":\"ykramarz@cisco.com\",\"published\":\"2021-10-27T19:15:08.003\",\"lastModified\":\"2023-11-07T03:36:19.850\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite or append arbitrary data to system files using root-level privileges. The attacker must have administrative credentials on the device. This vulnerability is due to incomplete validation of user input for a specific CLI command. An attacker could exploit this vulnerability by authenticating to the device with administrative privileges and issuing a CLI command with crafted user parameters. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en el software Cisco Firepower Threat Defense (FTD) podr\u00eda permitir a un atacante local autenticado sobrescribir o a\u00f1adir datos arbitrarios a los archivos del sistema usando privilegios de nivel de root. El atacante debe tener credenciales administrativas en el dispositivo. Esta vulnerabilidad es debido a una comprobaci\u00f3n incompleta de la entrada del usuario para un comando CLI espec\u00edfico. Un atacante podr\u00eda explotar esta vulnerabilidad al autenticarse en el dispositivo con privilegios administrativos y emitiendo un comando CLI con par\u00e1metros de usuario dise\u00f1ados. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante sobrescribir o a\u00f1adir datos arbitrarios a los archivos del sistema usando privilegios de nivel root\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":6.0,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":0.8,\"impactScore\":5.2},{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\",\"baseScore\":4.4,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":0.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:N/I:C/A:C\",\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\",\"baseScore\":6.6},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.9,\"impactScore\":9.2,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-668\"}]},{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-73\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.2.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F75D9CB4-406B-4FBF-BC7A-35C2CCEFD8B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.4.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2C0FC62F-65AD-4855-953A-DA5BBFC1B2E1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.6.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B11AE299-AE40-42EB-9C0B-3865C932E766\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DA792E5D-7270-4C23-A8D6-22EB00CB21A2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:7.0.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0CB38685-4255-4565-98AA-234B9DEEADE3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:7.1.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7CF689E1-22FF-467F-B5A7-59833D77971E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.4.0\",\"versionEndExcluding\":\"6.4.0.13\",\"matchCriteriaId\":\"17F461B5-E600-4C81-BA3C-1DBC90D4D438\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6.0\",\"versionEndExcluding\":\"6.6.5\",\"matchCriteriaId\":\"37A74256-AF9A-473B-9DC7-A57618BA9F00\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7.0\",\"versionEndExcluding\":\"6.7.0.3\",\"matchCriteriaId\":\"98DEDDAB-B8C5-4753-A208-94638E694FC1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.0.0\",\"versionEndExcluding\":\"7.0.1\",\"matchCriteriaId\":\"7B2F537A-A488-45B6-AD4B-48B7064AE84C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:sourcefire_defense_center:6.2.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5E4A3574-53DC-4328-A229-87795AE4F7AF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:sourcefire_defense_center:6.4.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2EBC6544-6ADF-4F95-A969-A8D953D11B3A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:sourcefire_defense_center:6.6.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2B02800C-6420-4758-89CF-66F47B4FCA19\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:sourcefire_defense_center:6.7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3F41081E-06CF-4BA2-9072-E18D9032BEBC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:sourcefire_defense_center:7.0.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"52ED507A-5075-4444-A2D1-F5657453AD3F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:sourcefire_defense_center:7.1.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F5E9A6F5-8BC2-4FA5-9920-E980EFC5BCEE\"}]}]}],\"references\":[{\"url\":\"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc\",\"source\":\"ykramarz@cisco.com\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.