Koha 'KohaOpacLanguage' Cookie Parameter Local File Include Vulnerability

Bugtraq ID:	50812
Class:	Input Validation Error
CVE:	CVE-2011-4715
Remote:	Yes
Local:	No
Published:	Nov 24 2011 12:00AM
Updated:	Dec 20 2011 09:59PM
Credit:	Frère Sébastien Marie
Vulnerable:	Koha Library Software Community Koha 3.6 Koha Library Software Community Koha 3.4.6 Koha Library Software Community Koha 3.4.2 Koha Library Software Community Koha 3.4.1
Not Vulnerable:	Koha Library Software Community Koha 3.6.1 Koha Library Software Community Koha 3.4.7

Koha 'KohaOpacLanguage' Cookie Parameter Local File Include Vulnerability

Koha is prone to a local file-include vulnerability because it fails to sufficiently sanitize user-supplied input.

An attacker can exploit this vulnerability to obtain potentially sensitive information and execute arbitrary local scripts in the context of the Web server process. This may allow the attacker to compromise the application and computer; other attacks are also possible.

Koha 3.4.x prior to 3.4.7 and 3.6.x prior to 3.6.1 are vulnerable.

Koha 'KohaOpacLanguage' Cookie Parameter Local File Include Vulnerability

Attackers can use a browser to exploit this issue.

The following example input is available:

KohaOpacLanguage=../../../../../../../../etc/passwd%00

Koha 'KohaOpacLanguage' Cookie Parameter Local File Include Vulnerability

Solution:
Updates are available. Please see the references for more information.

Koha 'KohaOpacLanguage' Cookie Parameter Local File Include Vulnerability

References:

• Koha Homepage (Koha Library Software Community)
  
• Bug 6629 - [security] insecure use of Cookie for language selection (Frère Sébastien Marie)