FKIE_CVE-2021-42669

Vulnerability from fkie_nvd - Published: 2021-11-05 13:15 - Updated: 2024-11-21 06:27
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
A file upload vulnerability exists in Sourcecodester Engineers Online Portal in PHP via dashboard_teacher.php, which allows changing the avatar through teacher_avatar.php. Once an avatar gets uploaded it is getting uploaded to the /admin/uploads/ directory, and is accessible by all users. By uploading a php webshell containing "<?php system($_GET["cmd"]); ?>" the attacker can execute commands on the web server with - /admin/uploads/php-webshell?cmd=id.
References
cve@mitre.orghttps://github.com/TheHackingRabbi/CVE-2021-42669Exploit, Third Party Advisory
cve@mitre.orghttps://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671Exploit, Third Party Advisory
cve@mitre.orghttps://www.sourcecodester.com/php/13115/engineers-online-portal-php.htmlProduct, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/TheHackingRabbi/CVE-2021-42669Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.sourcecodester.com/php/13115/engineers-online-portal-php.htmlProduct, Third Party Advisory
Impacted products
Vendor Product Version
engineers_online_portal_project engineers_online_portal -
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:engineers_online_portal_project:engineers_online_portal:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "A0BC67C5-58BA-4810-8E5C-2DA4382C59D3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A file upload vulnerability exists in Sourcecodester Engineers Online Portal in PHP via dashboard_teacher.php, which allows changing the avatar through teacher_avatar.php. Once an avatar gets uploaded it is getting uploaded to the /admin/uploads/ directory, and is accessible by all users. By uploading a php webshell containing \"\u003c?php system($_GET[\"cmd\"]); ?\u003e\" the attacker can execute commands on the web server with - /admin/uploads/php-webshell?cmd=id."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de carga de archivos en Sourcecodester Engineers Online Portal en PHP por medio del archivo dashboard_teacher.php, que permite cambiar el avatar mediante el archivo teacher_avatar.php. Una vez que se sube un avatar se sube al directorio /admin/uploads/, y es accesible por todos los usuarios. Subiendo una webshell php que contenga \"\" el atacante puede ejecutar comandos en el servidor web con - /admin/uploads/php-webshell?cmd=id"
    }
  ],
  "id": "CVE-2021-42669",
  "lastModified": "2024-11-21T06:27:57.490",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 10.0,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-11-05T13:15:09.213",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/TheHackingRabbi/CVE-2021-42669"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://github.com/TheHackingRabbi/CVE-2021-42669"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory"
      ],
      "url": "https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product",
        "Third Party Advisory"
      ],
      "url": "https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

Author Source Type Date

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.