FKIE_CVE-2024-40721

Vulnerability from fkie_nvd - Published: 2024-08-02 11:16 - Updated: 2026-06-17 07:46
Severity
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate server-side input. When a user visits a spoofed website, unauthenticated remote attackers can cause the TCBServiSign to load a DLL from an arbitrary path.
References
twcert@cert.org.twhttps://www.twcert.org.tw/en/cp-139-7972-01a6e-2.htmlThird Party Advisory
twcert@cert.org.twhttps://www.twcert.org.tw/tw/cp-132-7966-8c6c3-1.htmlThird Party Advisory
Impacted products
Vendor Product Version
changingtec tcb_servisign *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "TCBServiSign Windows Version",
          "vendor": "CHANGING Information Technology",
          "versions": [
            {
              "lessThan": "1.0.24.0318",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "twcert@cert.org.tw"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:changingtec:servisign:*:*:*:*:*:windows:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "servisign",
          "vendor": "changingtec",
          "versions": [
            {
              "lessThan": "1.0.24.0318",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:changingtec:tcb_servisign:*:*:*:*:*:windows:*:*",
              "matchCriteriaId": "4F2A798C-915D-4A62-A562-5B1AFE7899A9",
              "versionEndExcluding": "1.0.24.0318",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate server-side input. When a user visits a spoofed website, unauthenticated remote attackers can cause the TCBServiSign to load a DLL from an arbitrary path."
    },
    {
      "lang": "es",
      "value": " La API espec\u00edfica en TCBServiSign Windows Version de CHANGING Information Technology no valida correctamente la entrada del lado del servidor. Cuando un usuario visita un sitio web falsificado, atacantes remotos no autenticados pueden hacer que TCBServiSign cargue una DLL desde una ruta arbitraria."
    }
  ],
  "id": "CVE-2024-40721",
  "lastModified": "2026-06-17T07:46:24.390",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "twcert@cert.org.tw",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-40721",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-08-02T13:36:20.673168Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-08-02T11:16:43.020",
  "references": [
    {
      "source": "twcert@cert.org.tw",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.twcert.org.tw/en/cp-139-7972-01a6e-2.html"
    },
    {
      "source": "twcert@cert.org.tw",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.twcert.org.tw/tw/cp-132-7966-8c6c3-1.html"
    }
  ],
  "sourceIdentifier": "twcert@cert.org.tw",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "twcert@cert.org.tw",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

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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.
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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.