ocProducts Composr CMS 跨站脚本漏洞

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漏洞ID 2036196 漏洞类型 跨站脚本
发布时间 2020-05-22 更新时间 2020-08-18
CVE编号 CVE-2020-8789 CNNVD-ID CNNVD-202005-1108
漏洞平台 N/A CVSS评分 N/A
|漏洞来源
https://cxsecurity.com/issue/WLB-2020050172
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-202005-1108
|漏洞详情
ocProducts Composr CMS是英国ocProducts公司的一套使用PHP语言编写的开源内容管理系统(CMS)。 ocProducts Composr CMS 10.0.30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
# Title: Composr CMS 10.0.30 - Persistent Cross-Site Scripting
# Author: Manuel Garcia Cardenas
# Date: 2020-02-06
# Vendor: https://compo.sr/
# CVE: N/A


=============================================
MGC ALERT 2020-001
- Original release date: February 06, 2020
- Last revised:  May 21, 2020
- Discovered by: Manuel Garcia Cardenas
- Severity: 4,8/10 (CVSS Base Score)
- CVE-ID: CVE-2020-8789
=============================================

I. VULNERABILITY
-------------------------
Composr CMS 10.0.30 - (Authenticated) Cross-Site Scripting

II. BACKGROUND
-------------------------
Composr CMS (or Composr) is a web application for creating websites. It is
a combination of a Web content management system and Online community
(Social Networking) software. Composr is licensed as free software and
primarily written in the PHP programming language.

III. DESCRIPTION
-------------------------
Has been detected a Persistent XSS vulnerability in Composr CMS, that
allows the execution of arbitrary HTML/script code to be executed in the
context of the victim user's browser.

IV. PROOF OF CONCEPT
-------------------------
Go to: Security -> Usergroups -> Edit Usergroup

Select one Usergroup (for example Guest) and edit the Name (parameter name)
for example with Guests"><script>alert(1)</script>

The variable "name" it is not sanitized, later, if some user visit the
"Zone editor" area, the XSS is executed, in the response you can view:

<input type="hidden" name="label_for__access_1" value="Access for
Guests"><script>alert(1)</script>" />

V. BUSINESS IMPACT
-------------------------
An attacker can execute arbitrary HTML or Javascript code in a targeted
user's browser, this can leverage to steal sensitive information as user
credentials, personal data, etc.

VI. SYSTEMS AFFECTED
-------------------------
Composr CMS  <= 10.0.30

VII. SOLUTION
-------------------------
Disable until a fix is available.

VIII. REFERENCES
-------------------------
https://compo.sr/

IX. CREDITS
-------------------------
This vulnerability has been discovered and reported
by Manuel Garcia Cardenas (advidsec (at) gmail (dot) com).

X. REVISION HISTORY
-------------------------
February 06, 2020 1: Initial release
May 21, 2020 2: Last revision

XI. DISCLOSURE TIMELINE
-------------------------
February 06, 2020 1: Vulnerability acquired by Manuel Garcia Cardenas
February 06, 2020 2: Send to vendor
April 06, 2020 3: New request, vendor doesn't answer.
May 21, 2020 4: Sent to lists

XII. LEGAL NOTICES
-------------------------
The information contained within this advisory is supplied "as-is" with no
warranties or guarantees of fitness of use or otherwise.

XIII. ABOUT
-------------------------
Manuel Garcia Cardenas
Pentester
|参考资料

来源:MISC

链接:https://packetstormsecurity.com/files/157787/Composr-CMS-10.0.30-Cross-Site-Scripting.html


来源:FULLDISC

链接:http://seclists.org/fulldisclosure/2020/May/39


来源:packetstormsecurity.com

链接:https://packetstormsecurity.com/files/157787/Composr-CMS-10.0.30-Cross-Site-Scripting.html


来源:nvd.nist.gov

链接:https://nvd.nist.gov/vuln/detail/CVE-2020-8789