what you don't know can hurt you

WordPress YouTube Embed 3.3.2 Cross Site Scripting

WordPress YouTube Embed 3.3.2 Cross Site Scripting
Posted Aug 26, 2015

WordPress YouTube Embed plugin version 3.3.2 suffers from a stored cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2015-6535
MD5 | b337a0d202939c3829cb9a4f4256ceea

WordPress YouTube Embed 3.3.2 Cross Site Scripting

Change Mirror Download

Details
================
Software: YouTube Embed
Version: 3.3.2
Homepage: https://wordpress.org/plugins/youtube-embed/
CVE ID: CVE-2015-6535 (Pending)
CWE ID: CWE-79
CVSS: 5.5 (Medium; AV:N/AC:L/Au:S/C:P/I:P/A:N)

Description
================
A stored XSS vulnerability in YouTube Embed 3.3.2 (and possibly earlier versions) allows admin users to compromise other admins and super admins.

YouTube Embed is a WordPress plugin with over 30,000 active installs.

Vulnerability
================
Admins on multisite installs can inject arbitrary JavaScript into pages visible to super admins via the plugin's unsanitized profile name field.

Note: Admins on multisite installs lack the unfiltered_html capability – only super admins can enter unfiltered html [2].

>From youtube-embed/includes/options-profiles.php:

31: $options[ 'name' ] = $_POST[ 'youtube_embed_name' ];

95: echo '<div class="updated fade"><p><strong>' . __( $options[ 'name' ].' Profile Saved.' ) . "</strong></p></div>\n";

Proof of concept
================
1. As an admin user authorized for plugins, go to the YouTube Embed Profiles page.
2. Choose a profile from the drop down list on the right and click 'Change profile'.
3. Enter an XSS payload (e.g. <script>alert(1)</script>) into the 'Profile name' field.
4. Log out and log in as a super admin or a different admin.
5. Navigate to the YouTube Embed Options page.

This has been tested with Firefox 38.2.0 on Debian.

Mitigation
================
Upgrade the plugin to version 3.3.3 or later.

Timeline
================
2015-08-19: Discovered
2015-08-19: Requested vulnerability reporting instructions via vendor support form
2015-08-20: Vendor asked that vulnerability be reported on the vendor's website plugin page
2015-08-20: Reported to vendor via plugin page
2015-08-20: Requested CVE number
2015-08-23: Vendor released version 3.3.3 – confirmed fixed
2015-08-26: Public Disclosure

References
================
[1] https://wordpress.org/plugins/youtube-embed/changelog/
[2] https://codex.wordpress.org/Roles_and_Capabilities#Additional_Admin_Capabilities
Login or Register to add favorites

File Archive:

May 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    May 1st
    1 Files
  • 2
    May 2nd
    4 Files
  • 3
    May 3rd
    27 Files
  • 4
    May 4th
    17 Files
  • 5
    May 5th
    3 Files
  • 6
    May 6th
    32 Files
  • 7
    May 7th
    11 Files
  • 8
    May 8th
    0 Files
  • 9
    May 9th
    0 Files
  • 10
    May 10th
    0 Files
  • 11
    May 11th
    0 Files
  • 12
    May 12th
    0 Files
  • 13
    May 13th
    0 Files
  • 14
    May 14th
    0 Files
  • 15
    May 15th
    0 Files
  • 16
    May 16th
    0 Files
  • 17
    May 17th
    0 Files
  • 18
    May 18th
    0 Files
  • 19
    May 19th
    0 Files
  • 20
    May 20th
    0 Files
  • 21
    May 21st
    0 Files
  • 22
    May 22nd
    0 Files
  • 23
    May 23rd
    0 Files
  • 24
    May 24th
    0 Files
  • 25
    May 25th
    0 Files
  • 26
    May 26th
    0 Files
  • 27
    May 27th
    0 Files
  • 28
    May 28th
    0 Files
  • 29
    May 29th
    0 Files
  • 30
    May 30th
    0 Files
  • 31
    May 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close