CWE-434
AllowedUnrestricted Upload of File with Dangerous Type
Abstraction: Base · Status: Draft
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
6004 vulnerabilities reference this CWE, most recent first.
GHSA-GXJW-49FG-J678
Vulnerability from github – Published: 2024-12-18 21:30 – Updated: 2026-04-01 18:32Unrestricted Upload of File with Dangerous Type vulnerability in VibeThemes WPLMS allows Upload a Web Shell to a Web Server.This issue affects WPLMS: from n/a before 1.9.9.5.2.
{
"affected": [],
"aliases": [
"CVE-2024-56057"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-18T19:15:13Z",
"severity": "CRITICAL"
},
"details": "Unrestricted Upload of File with Dangerous Type vulnerability in VibeThemes WPLMS allows Upload a Web Shell to a Web Server.This issue affects WPLMS: from n/a before 1.9.9.5.2.",
"id": "GHSA-gxjw-49fg-j678",
"modified": "2026-04-01T18:32:52Z",
"published": "2024-12-18T21:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56057"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Plugin/wplms_plugin/vulnerability/wordpress-wplms-plugin-1-9-9-5-2-arbitrary-file-upload-vulnerability?_s_id=cve"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/wplms-plugin/vulnerability/wordpress-wplms-plugin-1-9-9-5-2-arbitrary-file-upload-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GXMR-Q5P5-P9W5
Vulnerability from github – Published: 2026-06-30 12:31 – Updated: 2026-06-30 12:31An Unrestricted File Upload vulnerability in Redeight CMS version 1.0 allows authenticated attackers to achieve Remote Code Execution via the POST "/admin/index.php?module=pages&mode=FileAdd" endpoint. The application fails to validate file extensions and MIME types, permitting the upload of arbitrary PHP scripts to the publicly accessible "/uploads/files/" directory where they can be executed directly by the web server.
{
"affected": [],
"aliases": [
"CVE-2026-53691"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-30T12:16:24Z",
"severity": "HIGH"
},
"details": "An Unrestricted File Upload vulnerability in Redeight CMS version 1.0 allows authenticated attackers to achieve Remote Code Execution via the POST \"/admin/index.php?module=pages\u0026mode=FileAdd\" endpoint. The application fails to validate file extensions and MIME types, permitting the upload of arbitrary PHP scripts to the publicly accessible \"/uploads/files/\" directory where they can be executed directly by the web server.",
"id": "GHSA-gxmr-q5p5-p9w5",
"modified": "2026-06-30T12:31:53Z",
"published": "2026-06-30T12:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53691"
},
{
"type": "WEB",
"url": "https://cert.pl/posts/2026/06/CVE-2026-53690"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-GXQJ-2FG2-R9JH
Vulnerability from github – Published: 2024-06-18 00:31 – Updated: 2024-09-16 14:37A vulnerability, which was classified as critical, was found in PHPVibe 11.0.46. Affected is an unknown function of the file /app/uploading/upload-mp3.php of the component Media Upload Page. The manipulation of the argument file leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-268824. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2024-6083"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-18T00:15:09Z",
"severity": "MODERATE"
},
"details": "A vulnerability, which was classified as critical, was found in PHPVibe 11.0.46. Affected is an unknown function of the file /app/uploading/upload-mp3.php of the component Media Upload Page. The manipulation of the argument file leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-268824. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-gxqj-2fg2-r9jh",
"modified": "2024-09-16T14:37:24Z",
"published": "2024-06-18T00:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6083"
},
{
"type": "WEB",
"url": "https://github.com/WeikFu/PHPVibe-vulnerability-description/issues/2"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.268824"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.268824"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.353552"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-GXRR-WFG5-XQQF
Vulnerability from github – Published: 2026-06-29 15:32 – Updated: 2026-07-07 21:31The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
{
"affected": [],
"aliases": [
"CVE-2026-56290"
],
"database_specific": {
"cwe_ids": [
"CWE-284",
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-29T15:16:42Z",
"severity": "CRITICAL"
},
"details": "The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.",
"id": "GHSA-gxrr-wfg5-xqqf",
"modified": "2026-07-07T21:31:30Z",
"published": "2026-06-29T15:32:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56290"
},
{
"type": "WEB",
"url": "https://forum.joomlack.fr/index.php/page-builder-ck/21627-nouvelle-version-de-pbck-et-joomla-3"
},
{
"type": "WEB",
"url": "https://mysites.guru/blog/pagebuilderck-unauthenticated-file-upload-rce"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56290"
},
{
"type": "WEB",
"url": "https://www.joomlack.fr"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red",
"type": "CVSS_V4"
}
]
}
GHSA-GXXH-8VCJ-W2MH
Vulnerability from github – Published: 2026-05-04 22:11 – Updated: 2026-05-04 22:11Impact
All versions of mckenziearts/livewire-markdown-editor prior to v1.3 contain a critical arbitrary file upload vulnerability in the MarkdownEditor::updatedAttachments() Livewire handler. The handler calls $file->store() with no server-side validation of MIME type, extension, or file content.
Any authenticated user with access to a page embedding <livewire:markdown-editor> can upload files of any type (.html, .svg, .js, .php, .exe, etc.) to the disk configured by livewire-markdown-editor.disk. When that disk is a public cloud bucket (S3, DigitalOcean Spaces, Cloudflare R2, Scaleway Object Storage — the common configuration when FILESYSTEM_DISK points to such a disk), uploaded files are served publicly with a guessed Content-Type header.
The consequences include:
- Stored XSS on the storage domain via uploaded
.htmlor.svgfiles - Phishing page hosting on the application's own storage domain (trust laundering)
- Malware distribution from a domain users associate with the application
- Markdown injection in the editor output via crafted filenames (the client-supplied
getClientOriginalName()value was inserted verbatim into the markdown)
A real-world exploitation of this vulnerability was observed in production on a community platform using this package.
Patches
Upgrade to v1.3 or later.
Workarounds
If developers cannot upgrade immediately, disable the upload UI on every instance of the editor by passing :show-upload="false":
<livewire:markdown-editor wire:model="content" :show-upload="false" />
This hides the file input and prevents the vulnerable code path from being reached.
Resources
- Patch commit: https://github.com/mckenziearts/livewire-markdown-editor/pull/12
- Release: https://github.com/mckenziearts/livewire-markdown-editor/releases/tag/v1.3
- CWE-434: https://cwe.mitre.org/data/definitions/434.html
- CWE-79: https://cwe.mitre.org/data/definitions/79.html
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "mckenziearts/livewire-markdown-editor"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-434",
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-04T22:11:05Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Impact\nAll versions of `mckenziearts/livewire-markdown-editor` prior to **v1.3** contain a critical arbitrary file upload vulnerability in the `MarkdownEditor::updatedAttachments()` Livewire handler. The handler calls `$file-\u003estore()` with no server-side validation of MIME type, extension, or file content.\n\nAny authenticated user with access to a page embedding `\u003clivewire:markdown-editor\u003e` can upload files of any type (`.html`, `.svg`, `.js`, `.php`, `.exe`, etc.) to the disk configured by `livewire-markdown-editor.disk`. When that disk is a public cloud bucket (S3, DigitalOcean Spaces, Cloudflare R2, Scaleway Object Storage \u2014 the common configuration when `FILESYSTEM_DISK` points to such a disk), uploaded files are served publicly with a guessed `Content-Type` header.\n\nThe consequences include:\n\n- **Stored XSS** on the storage domain via uploaded `.html` or `.svg` files\n- **Phishing page hosting** on the application\u0027s own storage domain (trust laundering)\n- **Malware distribution** from a domain users associate with the application\n- **Markdown injection** in the editor output via crafted filenames (the client-supplied `getClientOriginalName()` value was inserted verbatim into the markdown)\n\nA real-world exploitation of this vulnerability was observed in production on a community platform using this package.\n\n### Patches\n\nUpgrade to **v1.3** or later.\n\n### Workarounds\n\nIf developers cannot upgrade immediately, disable the upload UI on every instance of the editor by passing `:show-upload=\"false\"`:\n\n```blade\n \u003clivewire:markdown-editor wire:model=\"content\" :show-upload=\"false\" /\u003e\n```\n\nThis hides the file input and prevents the vulnerable code path from being reached.\n\n### Resources\n\n- Patch commit: https://github.com/mckenziearts/livewire-markdown-editor/pull/12\n- Release: https://github.com/mckenziearts/livewire-markdown-editor/releases/tag/v1.3\n- CWE-434: https://cwe.mitre.org/data/definitions/434.html\n- CWE-79: https://cwe.mitre.org/data/definitions/79.html",
"id": "GHSA-gxxh-8vcj-w2mh",
"modified": "2026-05-04T22:11:05Z",
"published": "2026-05-04T22:11:05Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/mckenziearts/livewire-markdown-editor/security/advisories/GHSA-gxxh-8vcj-w2mh"
},
{
"type": "WEB",
"url": "https://github.com/mckenziearts/livewire-markdown-editor/commit/1e60eaa5781e89704e112425f832774be85cd71f"
},
{
"type": "PACKAGE",
"url": "https://github.com/mckenziearts/livewire-markdown-editor"
},
{
"type": "WEB",
"url": "https://github.com/mckenziearts/livewire-markdown-editor/releases/tag/v1.3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "livewire-markdown-editor has arbitrary file upload that allows stored XSS via attachment handler"
}
GHSA-GXXX-8RJM-VQF3
Vulnerability from github – Published: 2022-07-08 00:00 – Updated: 2022-07-16 00:00File upload vulnerability in GFI Mail Archiver versions up to and including 15.1 via insecure implementation of Telerik Web UI plugin which is affected by CVE-2014-2217, and CVE-2017-11317.
{
"affected": [],
"aliases": [
"CVE-2021-29281"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-07-07T21:15:00Z",
"severity": "CRITICAL"
},
"details": "File upload vulnerability in GFI Mail Archiver versions up to and including 15.1 via insecure implementation of Telerik Web UI plugin which is affected by CVE-2014-2217, and CVE-2017-11317.",
"id": "GHSA-gxxx-8rjm-vqf3",
"modified": "2022-07-16T00:00:34Z",
"published": "2022-07-08T00:00:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29281"
},
{
"type": "WEB",
"url": "https://aminbohio.com/gfi-mail-archiver-15-1-telerik-ui-component-arbitrary-file-upload-unauthenticated-exploit"
},
{
"type": "WEB",
"url": "https://cwe.mitre.org/data/definitions/434.html"
},
{
"type": "WEB",
"url": "https://owasp.org/www-community/vulnerabilities/Unrestricted_File_Upload"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/50181"
},
{
"type": "WEB",
"url": "https://www.gfi.com/products-and-solutions/network-security-solutions/gfi-archiver"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-H24P-75G8-6X6C
Vulnerability from github – Published: 2024-02-07 00:30 – Updated: 2024-02-07 00:30A vulnerability, which was classified as critical, was found in Juanpao JPShop up to 1.5.02. Affected is the function actionUpdate of the file /api/controllers/merchant/shop/PosterController.php of the component API. The manipulation of the argument pic_url leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-253002 is the identifier assigned to this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2024-1263"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-06T23:15:08Z",
"severity": "MODERATE"
},
"details": "A vulnerability, which was classified as critical, was found in Juanpao JPShop up to 1.5.02. Affected is the function actionUpdate of the file /api/controllers/merchant/shop/PosterController.php of the component API. The manipulation of the argument pic_url leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-253002 is the identifier assigned to this vulnerability.",
"id": "GHSA-h24p-75g8-6x6c",
"modified": "2024-02-07T00:30:25Z",
"published": "2024-02-07T00:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1263"
},
{
"type": "WEB",
"url": "https://note.zhaoj.in/share/Lkrp36sa1EHO"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.253002"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.253002"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-H26H-5WW8-XHFR
Vulnerability from github – Published: 2025-05-11 12:30 – Updated: 2025-05-11 12:30A vulnerability was found in kkFileView 4.4.0. It has been classified as critical. This affects an unknown part of the file /fileUpload. The manipulation of the argument File leads to unrestricted upload. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2025-4538"
],
"database_specific": {
"cwe_ids": [
"CWE-284",
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-11T11:15:50Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in kkFileView 4.4.0. It has been classified as critical. This affects an unknown part of the file /fileUpload. The manipulation of the argument File leads to unrestricted upload. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-h26h-5ww8-xhfr",
"modified": "2025-05-11T12:30:29Z",
"published": "2025-05-11T12:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4538"
},
{
"type": "WEB",
"url": "https://magnificent-dill-351.notion.site/Arbitrary-File-Upload-in-kkFileView-4-4-0-1e3c693918ed802581faccab9140a130"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.308283"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.308283"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.566596"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-H2CV-XXPJ-4W3F
Vulnerability from github – Published: 2026-03-16 15:30 – Updated: 2026-03-16 15:30Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious content by exploiting enabled WebDAV HTTP methods. Attackers can use PUT, DELETE, MKCOL, MOVE, COPY, and PROPPATCH methods to upload executable code, delete files, or manipulate server content for remote code execution or denial of service.
{
"affected": [],
"aliases": [
"CVE-2017-20224"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-16T14:17:52Z",
"severity": "CRITICAL"
},
"details": "Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious content by exploiting enabled WebDAV HTTP methods. Attackers can use PUT, DELETE, MKCOL, MOVE, COPY, and PROPPATCH methods to upload executable code, delete files, or manipulate server content for remote code execution or denial of service.",
"id": "GHSA-h2cv-xxpj-4w3f",
"modified": "2026-03-16T15:30:41Z",
"published": "2026-03-16T15:30:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-20224"
},
{
"type": "WEB",
"url": "https://cxsecurity.com/issue/WLB-2017120301"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-webdav-arbitrary-file-upload"
},
{
"type": "WEB",
"url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5446.php"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-H2F9-J85C-642X
Vulnerability from github – Published: 2024-02-08 03:32 – Updated: 2024-02-10 06:30An arbitrary File download vulnerability exists in Novel-Plus v4.3.0-RC1 and prior at com.java2nb.common.controller.FileController: fileDownload(). An attacker can pass in specially crafted filePath and fieName parameters to perform arbitrary File download.
{
"affected": [],
"aliases": [
"CVE-2024-24024"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-08T01:15:27Z",
"severity": "CRITICAL"
},
"details": "An arbitrary File download vulnerability exists in Novel-Plus v4.3.0-RC1 and prior at com.java2nb.common.controller.FileController: fileDownload(). An attacker can pass in specially crafted filePath and fieName parameters to perform arbitrary File download.",
"id": "GHSA-h2f9-j85c-642x",
"modified": "2024-02-10T06:30:19Z",
"published": "2024-02-08T03:32:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-24024"
},
{
"type": "WEB",
"url": "https://github.com/201206030/novel-plus"
},
{
"type": "WEB",
"url": "https://github.com/cxcxcxcxcxcxcxc/cxcxcxcxcxcxcxc/blob/main/cxcxcxcxcxc/about-2024/24024.txt"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Generate a new, unique filename for an uploaded file instead of using the user-supplied filename, so that no external input is used at all.[REF-422] [REF-423]
Mitigation MIT-21
Strategy: Enforcement by Conversion
When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
Mitigation
Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically. [REF-423]
Mitigation MIT-5
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
- For example, limiting filenames to alphanumeric characters can help to restrict the introduction of unintended file extensions.
Mitigation
Define a very limited set of allowable extensions and only generate filenames that end in these extensions. Consider the possibility of XSS (CWE-79) before allowing .html or .htm file types.
Mitigation
Strategy: Input Validation
Ensure that only one extension is used in the filename. Some web servers, including some versions of Apache, may process files based on inner extensions so that "filename.php.gif" is fed to the PHP interpreter.[REF-422] [REF-423]
Mitigation
When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
Mitigation MIT-15
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation
Do not rely exclusively on sanity checks of file contents to ensure that the file is of the expected type and size. It may be possible for an attacker to hide code in some file segments that will still be executed by the server. For example, GIF images may contain a free-form comments field.
Mitigation
Do not rely exclusively on the MIME content type or filename attribute when determining how to render a file. Validating the MIME content type and ensuring that it matches the extension is only a partial solution.
Mitigation MIT-17
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
Mitigation MIT-22
Strategy: Sandbox or Jail
- Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs
In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.