FKIE_CVE-2021-26233

Vulnerability from fkie_nvd - Published: 2021-03-18 14:15 - Updated: 2024-11-21 05:55
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
FastStone Image Viewer <= 7.5 is affected by a user mode write access violation near NULL at 0x005bdfcb, triggered when a user opens or views a malformed CUR file that is mishandled by FSViewer.exe. Attackers could exploit this issue for a Denial of Service (DoS) or possibly to achieve code execution.
References
cve@mitre.orghttps://voidsec.com/advisories/cve-2021-26233-faststone-image-viewer-v-7-5-user-mode-write-access-violation/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://voidsec.com/advisories/cve-2021-26233-faststone-image-viewer-v-7-5-user-mode-write-access-violation/Third Party Advisory
Impacted products
Vendor Product Version
faststone image_viewer *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EF5DB16A-3B41-4691-8CE4-B8A98FA43CA2",
              "versionEndIncluding": "7.5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "FastStone Image Viewer \u003c= 7.5 is affected by a user mode write access violation near NULL at 0x005bdfcb, triggered when a user opens or views a malformed CUR file that is mishandled by FSViewer.exe. Attackers could exploit this issue for a Denial of Service (DoS) or possibly to achieve code execution."
    },
    {
      "lang": "es",
      "value": "FastStone Image Viewer versiones anteriores incluyendo a 7.5, est\u00e1 afectado por una infracci\u00f3n de acceso de escritura en modo de usuario cercana a NULL en 0x005bdfcb, que se desencadena cuando un usuario abre o visualiza un archivo CUR malformado que el archivo FSViewer.exe maneja inapropiadamente.\u0026#xa0;unos atacantes podr\u00edan explotar este problema para una Denegaci\u00f3n de Servicio (DoS) o posiblemente para lograr una ejecuci\u00f3n de c\u00f3digo"
    }
  ],
  "id": "CVE-2021-26233",
  "lastModified": "2024-11-21T05:55:57.847",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-03-18T14:15:13.630",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://voidsec.com/advisories/cve-2021-26233-faststone-image-viewer-v-7-5-user-mode-write-access-violation/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://voidsec.com/advisories/cve-2021-26233-faststone-image-viewer-v-7-5-user-mode-write-access-violation/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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



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