CVE Request: cups: Incomplete fix for CVE-2014-3537

[Salvatore Bonaccorso <carnil () debian org>]

Hi

CVE-2014-3537 was allocated for http://www.cups.org/str.php?L4450
(Insufficient checking leads to privilege escalation). The intention
in the fix was to dissalow symlinks.

With the fix applied fo CVE-2014-3537 this is still possible in some
cases (where language[0] is null), see https://cups.org/str.php?L4455

Additionally Michael Sweet wrote: 

> Yes, it looks like this needs to be an lstat as well, and we should
> probably add similar protections to the directory index files (which
> are also using stat).

Could a CVE be assigned to identify this? (Question: one CVE should be
enough for the additional fix for all the missing remaining lstat?).

Regards,
Salvatore