CVE-2021-37909 (GCVE-0-2021-37909)

Vulnerability from cvelistv5 – Published: 2021-09-15 19:10 – Updated: 2024-09-17 00:42
VLAI
Title
CHANGING Inc. TSSServiSignAdapter Windows Versions - Improper Input Validation
Summary
WriteRegistry function in TSSServiSign component does not filter and verify users’ input, remote attackers can rewrite to the registry without permissions thus perform hijack attacks to execute arbitrary code.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
CHANGING Inc. TSSServiSignAdapter Affected: unspecified , ≤ 1.0.20.0316 (custom)
Create a notification for this product.
Date Public
2021-09-15 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:30:08.999Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.twcert.org.tw/tw/cp-132-5093-76f04-1.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "platforms": [
            "Windows"
          ],
          "product": "TSSServiSignAdapter",
          "vendor": "CHANGING Inc.",
          "versions": [
            {
              "lessThanOrEqual": "1.0.20.0316",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-09-15T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "WriteRegistry function in TSSServiSign component does not filter and verify users\u2019 input, remote attackers can rewrite to the registry without permissions thus perform hijack attacks to execute arbitrary code."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20 Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-09-15T19:10:22.000Z",
        "orgId": "cded6c7f-6ce5-4948-8f87-aa7a3bbb6b0e",
        "shortName": "twcert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.twcert.org.tw/tw/cp-132-5093-76f04-1.html"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Update to version 1.0.21.0520"
        }
      ],
      "source": {
        "advisory": "TVN-202105006",
        "discovery": "EXTERNAL"
      },
      "title": "CHANGING Inc. TSSServiSignAdapter Windows Versions - Improper Input Validation",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "AKA": "TWCERT/CC",
          "ASSIGNER": "cve@cert.org.tw",
          "DATE_PUBLIC": "2021-09-15T19:04:00.000Z",
          "ID": "CVE-2021-37909",
          "STATE": "PUBLIC",
          "TITLE": "CHANGING Inc. TSSServiSignAdapter Windows Versions - Improper Input Validation"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "TSSServiSignAdapter",
                      "version": {
                        "version_data": [
                          {
                            "platform": "Windows",
                            "version_affected": "\u003c=",
                            "version_value": "1.0.20.0316"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "CHANGING Inc."
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "WriteRegistry function in TSSServiSign component does not filter and verify users\u2019 input, remote attackers can rewrite to the registry without permissions thus perform hijack attacks to execute arbitrary code."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-20 Improper Input Validation"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.twcert.org.tw/tw/cp-132-5093-76f04-1.html",
              "refsource": "MISC",
              "url": "https://www.twcert.org.tw/tw/cp-132-5093-76f04-1.html"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "Update to version 1.0.21.0520"
          }
        ],
        "source": {
          "advisory": "TVN-202105006",
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cded6c7f-6ce5-4948-8f87-aa7a3bbb6b0e",
    "assignerShortName": "twcert",
    "cveId": "CVE-2021-37909",
    "datePublished": "2021-09-15T19:10:22.691Z",
    "dateReserved": "2021-08-02T00:00:00.000Z",
    "dateUpdated": "2024-09-17T00:42:01.361Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-37909",
      "date": "2026-05-28",
      "epss": "0.01836",
      "percentile": "0.8323"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-37909\",\"sourceIdentifier\":\"twcert@cert.org.tw\",\"published\":\"2021-09-15T19:15:09.873\",\"lastModified\":\"2024-11-21T06:16:01.957\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"WriteRegistry function in TSSServiSign component does not filter and verify users\u2019 input, remote attackers can rewrite to the registry without permissions thus perform hijack attacks to execute arbitrary code.\"},{\"lang\":\"es\",\"value\":\"La funci\u00f3n WriteRegistry en el componente TSSServiSign no filtra ni verifica la entrada de los usuarios, unos atacantes remotos pueden reescribir en el registro sin permisos y as\u00ed llevar a cabo ataques de secuestro para ejecutar c\u00f3digo arbitrario\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"twcert@cert.org.tw\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:P\",\"baseScore\":7.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"twcert@cert.org.tw\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:tssservisignadapter_project:tssservisignadapter:*:*:*:*:*:windows:*:*\",\"versionEndIncluding\":\"1.0.20.0316\",\"matchCriteriaId\":\"AD8DA276-DE4E-4794-820C-9A58F60CD6C3\"}]}]}],\"references\":[{\"url\":\"https://www.twcert.org.tw/tw/cp-132-5093-76f04-1.html\",\"source\":\"twcert@cert.org.tw\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.twcert.org.tw/tw/cp-132-5093-76f04-1.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


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.