lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 01 Nov 2005 13:02:45 +0000
From: Ben Hutchings <ben@...adentplace.org.uk>
To: 3APA3A <3APA3A@...URITY.NNOV.RU>
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: Re: readdir_r considered harmful

3APA3A wrote:
> Dear Ben Hutchings,
> 
> 
> If  someone  uses pathconf to determine buffer size it's his own problem
> and  he creates vulnerability by himself. You can list such applications
> as vulnerable to race conditions.
<snip>
> NAME_MAX  is  defined  in limits.h and should be 255 according to latest
> POSIX extension. I see no problem with POSIX standard in this case.
> 
> See:
> http://www.opengroup.org/onlinepubs/009695399/basedefs/limits.h.html
<snip>

If you had read the above page more carefully, you would have seen these
paragraphs:

"The values in the following list may be constants within an
implementation or may vary from one pathname to another. For example,
file systems or directories may have different characteristics.

"A definition of one of the values shall be omitted from the <limits.h>
header on specific implementations where the corresponding value is
equal to or greater than the stated minimum, but where the value can
vary depending on the file to which it is applied. The actual value
supported for a specific pathname shall be provided by the pathconf()
function."

-- 
Ben Hutchings
When you say `I wrote a program that crashed Windows', people just stare ...
and say `Hey, I got those with the system, *for free*'. - Linus Torvalds

Download attachment "signature.asc" of type "application/pgp-signature" (190 bytes)

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

Powered by blists - more mailing lists