CVE-2021-27436 (GCVE-0-2021-27436)

Vulnerability from cvelistv5 – Published: 2021-03-18 21:24 – Updated: 2024-08-03 20:48
VLAI
Summary
WebAccess/SCADA Versions 9.0 and prior is vulnerable to cross-site scripting, which may allow an attacker to send malicious JavaScript code to an unsuspecting user, which could result in hijacking of the user’s cookie/session tokens, redirecting the user to a malicious webpage and performing unintended browser actions.
Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING') CWE-79
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a Advantech WebAccess/SCADA Affected: Versions 9.0 and prior
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:48:17.186Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-075-01"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Advantech WebAccess/SCADA",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 9.0 and prior"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "WebAccess/SCADA Versions 9.0 and prior is vulnerable to cross-site scripting, which may allow an attacker to send malicious JavaScript code to an unsuspecting user, which could result in hijacking of the user\u2019s cookie/session tokens, redirecting the user to a malicious webpage and performing unintended browser actions."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION (\u0027CROSS-SITE SCRIPTING\u0027) CWE-79",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-03-18T21:24:57.000Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "shortName": "icscert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-075-01"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "ics-cert@hq.dhs.gov",
          "ID": "CVE-2021-27436",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Advantech WebAccess/SCADA",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Versions 9.0 and prior"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "WebAccess/SCADA Versions 9.0 and prior is vulnerable to cross-site scripting, which may allow an attacker to send malicious JavaScript code to an unsuspecting user, which could result in hijacking of the user\u2019s cookie/session tokens, redirecting the user to a malicious webpage and performing unintended browser actions."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION (\u0027CROSS-SITE SCRIPTING\u0027) CWE-79"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://us-cert.cisa.gov/ics/advisories/icsa-21-075-01",
              "refsource": "MISC",
              "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-075-01"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
    "assignerShortName": "icscert",
    "cveId": "CVE-2021-27436",
    "datePublished": "2021-03-18T21:24:57.000Z",
    "dateReserved": "2021-02-19T00:00:00.000Z",
    "dateUpdated": "2024-08-03T20:48:17.186Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-27436",
      "date": "2026-09-22",
      "epss": "0.0069",
      "percentile": "0.51357"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:advantech:webaccess\\/scada:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "EE952533-988E-4B44-8FD3-A29B53C1885A",
                    "versionEndIncluding": "9.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "WebAccess/SCADA Versions 9.0 and prior is vulnerable to cross-site scripting, which may allow an attacker to send malicious JavaScript code to an unsuspecting user, which could result in hijacking of the user\u2019s cookie/session tokens, redirecting the user to a malicious webpage and performing unintended browser actions."
          },
          {
            "lang": "es",
            "value": "WebAccess/SCADA versiones 9.0 y anteriores, son vulnerables a un ataque de tipo cross-site scripting, lo que puede permitir a un atacante enviar c\u00f3digo JavaScript malicioso a un usuario desprevenido, lo que podr\u00eda resultar en el secuestro de las cookies y tokens de sesi\u00f3n del usuario, redireccionando al usuario a una p\u00e1gina web maliciosa. y llevar a cabo acciones no deseadas del navegador"
          }
        ],
        "id": "CVE-2021-27436",
        "lastModified": "2024-11-21T05:57:59.240",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.1,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 2.7,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-03-18T22:15:13.617",
        "references": [
          {
            "source": "ics-cert@hq.dhs.gov",
            "tags": [
              "Third Party Advisory",
              "US Government Resource"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-075-01"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "US Government Resource"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-075-01"
          }
        ],
        "sourceIdentifier": "ics-cert@hq.dhs.gov",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-79"
              }
            ],
            "source": "ics-cert@hq.dhs.gov",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-79"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T14:25:14+00:00",
      "cve": "CVE-2021-27436",
      "id": "CVE-2021-27436",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-27436",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-27436.json",
      "version": "3"
    }
  }
}



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.