1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133 | Document Title:
===============
Chamilo LMS IDOR - (messageId) Delete POST Inject Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1720
Video: https://www.youtube.com/watch?v=3ApPhUIk12Y
Release Date:
=============
2016-02-15
Vulnerability Laboratory ID (VL-ID):
====================================
1720
Common Vulnerability Scoring System:
====================================
6.1
Product & Service Introduction:
===============================
Chamilo is an open-source (under GNU/GPL licensing) e-learning and content management system, aimed at improving access to education and knowledge globally.
It is backed up by the Chamilo Association, which has goals including the promotion of the software, the maintenance of a clear communication channel and
the building of a network of services providers and software contributors.
The Chamilo project aims at ensuring the availability and quality of education at a reduced cost, through the distribution of its software free of charge,
the improvement of its interface for 3rd world countries devices portability and the provision of a free access public e-learning campus.
(Copy of the Homepage: https://chamilo.org/chamilo-lms/ )
Abstract Advisory Information:
==============================
An Insecure Direct Object Reference vulnerability has been discoverd in the official web-application Product Chamilo LMS.
Vulnerability Disclosure Timeline:
==================================
2016-02-15: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Exploitation Technique:
=======================
Remote
Severity Level:
===============
High
Technical Details & Description:
================================
An insecure direct object references occurd when an application provides direct access to objects based on user-supplied input.
As a result of this vulnerability attackers can bypass authorization and access resources in the system directly, for deleting
another users social wall posts Insecure Direct Object References allow attackers to bypass authorization and access resources
directly by modifying the value of a parameter[Message id] used to directly point to an Message id of social wall post id.
Vulnerability Method(s):
[+] GET
Vulnerable File(s):
[+] social/profile.php
Vulnerable Parameter(s):
[+] messageId
Proof of Concept (PoC):
=======================
The security vulnerability can be exploited by remote attackers with low privilege web-application user account and low user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.
1. User A goes to User B or Admin soical wall in platform : /profile.php?u=[USER ID]
2. choose any Posts related to USER B or ADMIN . and figure out the messageId of Post by replaying to it and
intercept the data to show the messageId parameter.
3. User A as Remote attacker will use this link filled with messageId in last to delete others posts
http://SOMESITE/CHAMILOSCRIPTPATH/main/social/profile.php?messageId=28
Security Risk:
==============
The security risk of the object reference web validation vulnerability in the web-application is estimated as high. (CVSS 6.1)
Credits & Authors:
==================
Lawrence Amer - ( http://www.vulnerability-lab.com/show.php?user=Lawrence%20Amer )
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-Lab
or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for
consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses,
policies, deface websites, hack into databases or trade with fraud/stolen material.
Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com
Contact: admin@vulnerability-lab.com - research@vulnerability-lab.com - admin@evolution-sec.com
Section: magazine.vulnerability-db.com - vulnerability-lab.com/contact.php - evolution-sec.com/contact
Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab
Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php
Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register/
Any modified copy or reproduction, including partially usages, of this file 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 (feed), modify, use or edit our material contact
(admin@vulnerability-lab.com or research@vulnerability-lab.com) to get a permission.
Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™
--
VULNERABILITY LABORATORY - RESEARCH TEAM
SERVICE: www.vulnerability-lab.com
CONTACT: research@vulnerability-lab.com
|
