CVE-2021-27432 (GCVE-0-2021-27432)

Vulnerability from cvelistv5 – Published: 2021-05-20 15:20 – Updated: 2024-08-03 20:48
VLAI
Summary
OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-674 - UNCONTROLLED RECURSION CWE-674
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy Affected: OPC UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:48:17.220Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "OPC UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-674",
              "description": "UNCONTROLLED RECURSION CWE-674",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-05-20T15:20:01.000Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "shortName": "icscert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "ics-cert@hq.dhs.gov",
          "ID": "CVE-2021-27432",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "OPC UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "UNCONTROLLED RECURSION CWE-674"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03",
              "refsource": "MISC",
              "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
    "assignerShortName": "icscert",
    "cveId": "CVE-2021-27432",
    "datePublished": "2021-05-20T15:20:01.000Z",
    "dateReserved": "2021-02-19T00:00:00.000Z",
    "dateUpdated": "2024-08-03T20:48:17.220Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-27432",
      "date": "2026-09-29",
      "epss": "0.0195",
      "percentile": "0.79432"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:opcfoundation:ua-.net-legacy:-:*:*:*:*:*:*:*",
                  "matchCriteriaId": "B04F956C-0D6B-453D-AA1B-4AB522B0C474",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:opcfoundation:ua_.net_standard_stack:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "2A02376A-04D5-48A2-9D3E-242FA6E3C00B",
                  "versionEndExcluding": "1.4.365.48",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."
        },
        {
          "lang": "es",
          "value": "OPC Foundation UA ??.NET Standard versiones anteriores a 1.4.365.48 y OPC UA .NET Legacy, son vulnerables a una recursividad no controlada, que puede permitir a un atacante desencadenar un desbordamiento de pila"
        }
      ],
      "id": "CVE-2021-27432",
      "lastModified": "2024-11-21T05:57:58.743",
      "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": "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"
          }
        ]
      },
      "published": "2021-05-20T16:15:07.967",
      "references": [
        {
          "source": "ics-cert@hq.dhs.gov",
          "tags": [
            "Third Party Advisory",
            "US Government Resource"
          ],
          "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory",
            "US Government Resource"
          ],
          "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
        }
      ],
      "sourceIdentifier": "ics-cert@hq.dhs.gov",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-674"
            }
          ],
          "source": "ics-cert@hq.dhs.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:opcfoundation:ua-.net-legacy:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B04F956C-0D6B-453D-AA1B-4AB522B0C474",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:opcfoundation:ua_.net_standard_stack:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2A02376A-04D5-48A2-9D3E-242FA6E3C00B",
                    "versionEndExcluding": "1.4.365.48",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."
          },
          {
            "lang": "es",
            "value": "OPC Foundation UA ??.NET Standard versiones anteriores a 1.4.365.48 y OPC UA .NET Legacy, son vulnerables a una recursividad no controlada, que puede permitir a un atacante desencadenar un desbordamiento de pila"
          }
        ],
        "id": "CVE-2021-27432",
        "lastModified": "2024-11-21T05:57:58.743",
        "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": "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"
            }
          ]
        },
        "published": "2021-05-20T16:15:07.967",
        "references": [
          {
            "source": "ics-cert@hq.dhs.gov",
            "tags": [
              "Third Party Advisory",
              "US Government Resource"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "US Government Resource"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
          }
        ],
        "sourceIdentifier": "ics-cert@hq.dhs.gov",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-674"
              }
            ],
            "source": "ics-cert@hq.dhs.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T14:25:15+00:00",
      "cve": "CVE-2021-27432",
      "id": "CVE-2021-27432",
      "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-2021-27432",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-27432.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.



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.