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118 lines
5.3 KiB
Markdown
118 lines
5.3 KiB
Markdown
# List of fixed vulnerabilities
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## Contents
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- [Potential vulnerabilities with PHP+ImageMagick](#potential-vulnerabilities-with-phpimagemagick)
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- [Remote code execution vulnerability in the PHP component](#remote-code-execution-vulnerability-in-the-php-component)
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- [Open redirect vulnerability in the GAE components](#open-redirect-vulnerability-in-the-gae-components)
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- [Cross-site scripting vulnerability in the Iframe Transport](#cross-site-scripting-vulnerability-in-the-iframe-transport)
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## Potential vulnerabilities with PHP+ImageMagick
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> Mitigated: 2018-10-25 (GMT)
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The sample [PHP upload handler](server/php/UploadHandler.php) before
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[v9.25.1](https://github.com/blueimp/jQuery-File-Upload/releases/tag/v9.25.1)
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did not validate file signatures before invoking
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[ImageMagick](https://www.imagemagick.org/) (via
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[Imagick](https://php.net/manual/en/book.imagick.php)).
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Verifying those
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[magic bytes](https://en.wikipedia.org/wiki/List_of_file_signatures) mitigates
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potential vulnerabilities when handling input files other than `GIF/JPEG/PNG`.
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Please also configure ImageMagick to only enable the coders required for
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`GIF/JPEG/PNG` processing, e.g. with the sample
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[ImageMagick config](SECURITY.md#imagemagick-config).
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**Further information:**
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- Commit containing the mitigation:
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[fe44d34](https://github.com/blueimp/jQuery-File-Upload/commit/fe44d34be43be32c6b8d507932f318dababb25dd)
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- [ImageTragick](https://imagetragick.com/)
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- [CERT Vulnerability Note VU#332928](https://www.kb.cert.org/vuls/id/332928)
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- [ImageMagick CVE entries](https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=imagemagick)
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## Remote code execution vulnerability in the PHP component
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> Fixed: 2018-10-23 (GMT)
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The sample [PHP upload handler](server/php/UploadHandler.php) before
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[v9.24.1](https://github.com/blueimp/jQuery-File-Upload/releases/tag/v9.24.1)
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allowed to upload all file types by default.
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This opens up a remote code execution vulnerability, unless the server is
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configured to not execute (PHP) files in the upload directory
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(`server/php/files`).
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The provided [.htaccess](server/php/files/.htaccess) file includes instructions
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for Apache to disable script execution, however
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[.htaccess support](https://httpd.apache.org/docs/current/howto/htaccess.html)
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is disabled by default since Apache `v2.3.9` via
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[AllowOverride Directive](https://httpd.apache.org/docs/current/mod/core.html#allowoverride).
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**You are affected if you:**
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1. A) Uploaded jQuery File Upload < `v9.24.1` on a Webserver that executes files
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with `.php` as part of the file extension (e.g. "example.php.png"), e.g.
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Apache with `mod_php` enabled and the following directive (_not a recommended
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configuration_):
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```ApacheConf
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AddHandler php5-script .php
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```
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B) Uploaded jQuery File Upload < `v9.22.1` on a Webserver that executes files
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with the file extension `.php`, e.g. Apache with `mod_php` enabled and the
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following directive:
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```ApacheConf
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<FilesMatch \.php$>
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SetHandler application/x-httpd-php
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</FilesMatch>
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```
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2. Did not actively configure your Webserver to not execute files in the upload
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directory (`server/php/files`).
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3. Are running Apache `v2.3.9+` with the default `AllowOverride` Directive set
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to `None` or another Webserver with no `.htaccess` support.
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**How to fix it:**
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1. Upgrade to the latest version of jQuery File Upload.
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2. Configure your Webserver to not execute files in the upload directory, e.g.
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with the [sample Apache configuration](SECURITY.md#apache-config)
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**Further information:**
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- Commits containing the security fix:
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[aeb47e5](https://github.com/blueimp/jQuery-File-Upload/commit/aeb47e51c67df8a504b7726595576c1c66b5dc2f),
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[ad4aefd](https://github.com/blueimp/jQuery-File-Upload/commit/ad4aefd96e4056deab6fea2690f0d8cf56bb2d7d)
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- [Full disclosure post on Hacker News](https://news.ycombinator.com/item?id=18267309).
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- [CVE-2018-9206](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-9206)
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- [OWASP - Unrestricted File Upload](https://owasp.org/www-community/vulnerabilities/Unrestricted_File_Upload)
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## Open redirect vulnerability in the GAE components
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> Fixed: 2015-06-12 (GMT)
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The sample Google App Engine upload handlers before
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v[9.10.1](https://github.com/blueimp/jQuery-File-Upload/releases/tag/9.10.1)
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accepted any URL as redirect target, making it possible to use the Webserver's
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domain for phishing attacks.
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**Further information:**
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- Commit containing the security fix:
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[f74d2a8](https://github.com/blueimp/jQuery-File-Upload/commit/f74d2a8c3e3b1e8e336678d2899facd5bcdb589f)
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- [OWASP - Unvalidated Redirects and Forwards Cheat Sheet](https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html)
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## Cross-site scripting vulnerability in the Iframe Transport
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> Fixed: 2012-08-09 (GMT)
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The [redirect page](cors/result.html) for the
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[Iframe Transport](js/jquery.iframe-transport.js) before commit
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[4175032](https://github.com/blueimp/jQuery-File-Upload/commit/41750323a464e848856dc4c5c940663498beb74a)
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(_fixed in all tagged releases_) allowed executing arbitrary JavaScript in the
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context of the Webserver.
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**Further information:**
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- Commit containing the security fix:
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[4175032](https://github.com/blueimp/jQuery-File-Upload/commit/41750323a464e848856dc4c5c940663498beb74a)
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- [OWASP - Cross-site Scripting (XSS)](https://owasp.org/www-community/attacks/xss/)
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