Re: CVE request: a2ps insecure temporary file use

[Murray McAllister <mmcallis () redhat com>]

On 02/03/2014 05:12 PM, Murray McAllister wrote:
> Hello,
>
> Jakub Wilk found that a2ps, a tool to convert text and other types of
> files to PostScript, insecurely used a temporary file in spy_user(). A
> local attacker could use this flaw to perform a symbolic link attack to
> modify an arbitrary file accessible to the user running a2ps:
>
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737385
>
> The original report notes there are calls to tempname_ensure(). If any
> of those are found to be vulnerable, would they use the same CVE number,
> or require a different one?
>
> References:
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737385
> https://bugzilla.redhat.com/show_bug.cgi?id=1060630
>
> Thanks,
>
> --
> Murray McAllister / Red Hat Security Response Team

Tim Waugh pointed out this was fixed in 2001:

https://bugzilla.redhat.com/show_bug.cgi?id=1060630#c5

And notes 
http://pkgs.fedoraproject.org/cgit/a2ps.git/plain/a2ps-4.13-security.patch 
is the patch.

Cheers,

--
Murray McAllister / Red Hat Security Response Team