1# List of fixed vulnerabilities
2
3## Contents
4
5- [Potential vulnerabilities with PHP+ImageMagick](#potential-vulnerabilities-with-phpimagemagick)
6- [Remote code execution vulnerability in the PHP component](#remote-code-execution-vulnerability-in-the-php-component)
7- [Open redirect vulnerability in the GAE components](#open-redirect-vulnerability-in-the-gae-components)
8- [Cross-site scripting vulnerability in the Iframe Transport](#cross-site-scripting-vulnerability-in-the-iframe-transport)
9
10## Potential vulnerabilities with PHP+ImageMagick
11
12> Mitigated: 2018-10-25 (GMT)
13
14The sample [PHP upload handler](server/php/UploadHandler.php) before
15[v9.25.1](https://github.com/blueimp/jQuery-File-Upload/releases/tag/v9.25.1)
16did not validate file signatures before invoking
17[ImageMagick](https://www.imagemagick.org/) (via
18[Imagick](https://php.net/manual/en/book.imagick.php)).
19Verifying those
20[magic bytes](https://en.wikipedia.org/wiki/List_of_file_signatures) mitigates
21potential vulnerabilities when handling input files other than `GIF/JPEG/PNG`.
22
23Please also configure ImageMagick to only enable the coders required for
24`GIF/JPEG/PNG` processing, e.g. with the sample
25[ImageMagick config](SECURITY.md#imagemagick-config).
26
27**Further information:**
28
29- Commit containing the mitigation:
30  [fe44d34](https://github.com/blueimp/jQuery-File-Upload/commit/fe44d34be43be32c6b8d507932f318dababb25dd)
31- [ImageTragick](https://imagetragick.com/)
32- [CERT Vulnerability Note VU#332928](https://www.kb.cert.org/vuls/id/332928)
33- [ImageMagick CVE entries](https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=imagemagick)
34
35## Remote code execution vulnerability in the PHP component
36
37> Fixed: 2018-10-23 (GMT)
38
39The sample [PHP upload handler](server/php/UploadHandler.php) before
40[v9.24.1](https://github.com/blueimp/jQuery-File-Upload/releases/tag/v9.24.1)
41allowed to upload all file types by default.
42This opens up a remote code execution vulnerability, unless the server is
43configured to not execute (PHP) files in the upload directory
44(`server/php/files`).
45
46The provided [.htaccess](server/php/files/.htaccess) file includes instructions
47for Apache to disable script execution, however
48[.htaccess support](https://httpd.apache.org/docs/current/howto/htaccess.html)
49is disabled by default since Apache `v2.3.9` via
50[AllowOverride Directive](https://httpd.apache.org/docs/current/mod/core.html#allowoverride).
51
52**You are affected if you:**
53
541. A) Uploaded jQuery File Upload < `v9.24.1` on a Webserver that executes files
55   with `.php` as part of the file extension (e.g. "example.php.png"), e.g.
56   Apache with `mod_php` enabled and the following directive (_not a recommended
57   configuration_):
58   ```ApacheConf
59   AddHandler php5-script .php
60   ```
61   B) Uploaded jQuery File Upload < `v9.22.1` on a Webserver that executes files
62   with the file extension `.php`, e.g. Apache with `mod_php` enabled and the
63   following directive:
64   ```ApacheConf
65   <FilesMatch \.php$>
66     SetHandler application/x-httpd-php
67   </FilesMatch>
68   ```
692. Did not actively configure your Webserver to not execute files in the upload
70   directory (`server/php/files`).
713. Are running Apache `v2.3.9+` with the default `AllowOverride` Directive set
72   to `None` or another Webserver with no `.htaccess` support.
73
74**How to fix it:**
75
761. Upgrade to the latest version of jQuery File Upload.
772. Configure your Webserver to not execute files in the upload directory, e.g.
78   with the [sample Apache configuration](SECURITY.md#apache-config)
79
80**Further information:**
81
82- Commits containing the security fix:
83  [aeb47e5](https://github.com/blueimp/jQuery-File-Upload/commit/aeb47e51c67df8a504b7726595576c1c66b5dc2f),
84  [ad4aefd](https://github.com/blueimp/jQuery-File-Upload/commit/ad4aefd96e4056deab6fea2690f0d8cf56bb2d7d)
85- [Full disclosure post on Hacker News](https://news.ycombinator.com/item?id=18267309).
86- [CVE-2018-9206](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-9206)
87- [OWASP - Unrestricted File Upload](https://www.owasp.org/index.php/Unrestricted_File_Upload)
88
89## Open redirect vulnerability in the GAE components
90
91> Fixed: 2015-06-12 (GMT)
92
93The sample Google App Engine upload handlers before
94v[9.10.1](https://github.com/blueimp/jQuery-File-Upload/releases/tag/9.10.1)
95accepted any URL as redirect target, making it possible to use the Webserver's
96domain for phishing attacks.
97
98**Further information:**
99
100- Commit containing the security fix:
101  [f74d2a8](https://github.com/blueimp/jQuery-File-Upload/commit/f74d2a8c3e3b1e8e336678d2899facd5bcdb589f)
102- [OWASP - Unvalidated Redirects and Forwards Cheat Sheet](https://www.owasp.org/index.php/Unvalidated_Redirects_and_Forwards_Cheat_Sheet)
103
104## Cross-site scripting vulnerability in the Iframe Transport
105
106> Fixed: 2012-08-09 (GMT)
107
108The [redirect page](cors/result.html) for the
109[Iframe Transport](js/jquery.iframe-transport.js) before commit
110[4175032](https://github.com/blueimp/jQuery-File-Upload/commit/41750323a464e848856dc4c5c940663498beb74a)
111(_fixed in all tagged releases_) allowed executing arbitrary JavaScript in the
112context of the Webserver.
113
114**Further information:**
115
116- Commit containing the security fix:
117  [4175032](https://github.com/blueimp/jQuery-File-Upload/commit/41750323a464e848856dc4c5c940663498beb74a)
118- [OWASP - Cross-site Scripting (XSS)](<https://www.owasp.org/index.php/Cross-site_Scripting_(XSS)>)
119