tlGuestBook Cookie Authentication Bypass Vulnerability

Bugtraq ID:	31958
Class:	Access Validation Error
CVE:	CVE-2008-5065
Remote:	Yes
Local:	No
Published:	Oct 28 2008 12:00AM
Updated:	Apr 16 2015 05:52PM
Credit:	x0r
Vulnerable:	Tommy Leunen tlGuestBook 1.2
Not Vulnerable:

tlGuestBook Cookie Authentication Bypass Vulnerability

tlGuestBook is prone to an authentication-bypass vulnerability because it fails to adequately verify user-supplied input used for cookie-based authentication.

Attackers can exploit this vulnerability to gain administrative access; this may aid in further attacks.

tlGuestBook 1.2 is vulnerable; other versions may also be affected.

tlGuestBook Cookie Authentication Bypass Vulnerability

Attackers may exploit this issue through a browser.

The following example code is available:

javascript:document.cookie = "tlGuestBook_login=admin; path=/"

tlGuestBook Cookie Authentication Bypass Vulnerability

Solution:
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

tlGuestBook Cookie Authentication Bypass Vulnerability

References:

• tlGuestBook Homepage (Tommy Leunen)