CVE-2018-5961

Document Title: =============== CentOS Web Panel v0.9.8.12 - CS Cross Site Vulnerabilities References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1835 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-5961 CVE-ID: ======= CVE-2018-5961 Release Date: ============= 2018-01-17 Vulnerability Laboratory ID (VL-ID): ==================================== 1835 Common Vulnerability Scoring System: ==================================== 4 Vulnerability Class: ==================== Cross Site Scripting - Non Persistent Current Estimated Price: ======================== 500€ - 1.000€ Product & Service Introduction: =============================== CentOS Web Panel - Free Web Hosting control panel is designed for quick and easy management of (Dedicated & VPS) servers without of need to use ssh console for every little thing. There is lot’s of options and features for server management in this control panel. CWP automatically installs full LAMP on your server (apache,php, phpmyadmin, webmail, mailserver…). (Copy of the Homepage: http://centos-webpanel.com/features ) Abstract Advisory Information: ============================== The vulnerability laboratory core research team discovered a client-side cross site scripting vulnerability in the CentOS Web Panel v0.9.8.12. Vulnerability Disclosure Timeline: ================================== 2017-01-15: Non-Public Disclosure (Vulnerability Laboratory - Shared Customer Research Feed) Discovery Status: ================= Published Affected Product(s): ==================== CWP Product: CentOS Web Panel - (CWP) 0.9.8.12 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Authentication Type: ==================== Open Authentication (Anonymous Privileges) User Interaction: ================= Low User Interaction Disclosure Type: ================ Independent Security Research Technical Details & Description: ================================ A client-side cross site scripting web vulnerability has been discovered in the official CentOS Web Panel v0.9.8.12. The vulnerability allows remote attackers to inject script code to the client-side browser to application requests. The client-side cross site web vulnerability is located in the `module` value of the `index.php` file GET method request. The vulnerability can be exploited by remote attackers with a prepared malicious link to the centos web-panel application. The request method to inject is GET and the attack vector is non-persistent. The injection point is the module parameter and the execution point occurs in the module exception. The security risk of the client-side vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.3. Exploitation of the non-persisten vulnerability requires no privileged web-application user account and low user interaction. Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing attacks, non-persistent external redirects to malicious source and non-persistent manipulation of affected or connected application modules. Request Method(s): [+] GET Vulnerable Module(s): [+] index.php Vulnerable Parameter(s): [+] module Proof of Concept (PoC): ======================= The cross site scripting vulnerability can be exploited by remote attackers without privileged web-application user account and with low user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. Dork(s): “powered by CentOS-WebPanel.com” PoC: Payload(s) http://localhost:2030/index.php?module=clam%3E%22%3Ciframe%20src=a%20onload=alert%28document.cookie%29%20%3C http://localhost:2030/index.php?module=clam PoC: Exception-Handling

The module clam>"<[CLIENT SIDE SCRIPT CODE PAYLOAD EXECUTION!]> does not exist.

— PoC Session Logs [POST] — Status: 200[OK] GET http://localhost:2030/index.php?module=clam%3E%22%3Ciframesrc=a%20onload=alert(document.cookie)%20%3C Mime Type[text/html] Request Header: Host[localhost:2030] User-Agent[Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Cookie[cwpsrv-3cc0cea69668d490e1029c2a41ce5df3=8fnvi0bqgjj162mqklruu8clq5; PHPSESSID=8dsrha0ivd80kkgukvklgvmct1] Connection[keep-alive] Response Header: Server[Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/1.0.1e-fips PHP/5.4.27] X-Powered-By[PHP/5.4.27] Expires[Thu, 19 Nov 1981 08:52:00 GMT] Keep-Alive[timeout=5, max=100] Connection[Keep-Alive] Transfer-Encoding[chunked] Content-Type[text/html] Reference(s): http://localhost:2030/index.php Solution - Fix & Patch: ======================= The vulnerability can be patched by a secure parse and encode of the vulnerable module parameter in the index-php file GET method request. Disallow special chars and restrict the parameter input to prevent further client-side script code injection attacks. Encode the output of the error exception for invalid inputs to prevent the execution point of the client-side vulnerability. Security Risk: ============== The security risk of the client-side cross site scripting web vulnerability in the centos web panel is estimated as medium. Credits & Authors: ================== Vulnerability-Lab [[email protected]] - https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability Labs or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability mainly for incidental or consequential damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data. We have no need for criminal activities or membership requests. We do not publish advisories or vulnerabilities of religious-, militant- and racist- hacker/analyst/researcher groups or individuals. We do not publish trade researcher mails, phone numbers, conversations or anything else to journalists, investigative authorities or private individuals. Domains: www.vulnerability-lab.com - www.vulnerability-db.com - www.evolution-sec.com Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register.php Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php Social: twitter.com/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab Any modified copy or reproduction, including partially usages, of this file, resources or information requires authorization from Vulnerability Laboratory. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by Vulnerability Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list, modify, use or edit our material contact (admin@) to get an ask permission. Copyright © 2017 | Vulnerability Laboratory - [Evolution Security GmbH]™