Re: [exim-dev] [Bug 1805] Recent Exim CVE mitigation breaks …

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Autor: Larry Rosenman
Datum:  
To: admin
CC: exim-dev, Exim-dev
Betreff: Re: [exim-dev] [Bug 1805] Recent Exim CVE mitigation breaks customer ability to determine where mail was sent from.
On 2016-03-07 14:03, admin@??? wrote:
> https://bugs.exim.org/show_bug.cgi?id=1805
>
> --- Comment #6 from Heiko Schlittermann <hs@???> ---
> (In reply to Todd Rinaldo from comment #5)
>> OSX seems to support this just fine. What are we worried about not
>> supporting it?
>>
>> GETCWD(3)                BSD Library Functions Manual
>> GETCWD(3)

>>
>> NAME
>>      getcwd, getwd -- get working directory pathname
>> ...
>>      If buf is NULL, space is allocated as necessary to store the 
>> pathname.
>> This space may later be free(3)'d.

>
> We still support some ancient *BSD systems. (I didn't know about that
> until
> last week. It was that, what the public release delayed.)
>
> I think, I'll go the big_buffer route, but I've to check the usage of
> the
> buffer. And I've to run it through the testsuite. So it may take it
> bit.
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.


This is true on FreeBSD 10.3 (I don't know how far back, but the date on
the manual page
is April of 2010.


GETCWD(3)              FreeBSD Library Functions Manual              
GETCWD(3)


NAME
      getcwd, getwd -- get working directory pathname


LIBRARY
      Standard C Library (libc, -lc)


SYNOPSIS
      #include <unistd.h>


      char *
      getcwd(char *buf, size_t size);


      char *
      getwd(char *buf);


DESCRIPTION
      The getcwd() function copies the absolute pathname of the current 
working
      directory into the memory referenced by buf and returns a pointer 
to buf.
      The size argument is the size, in bytes, of the array referenced by 
buf.


      If buf is NULL, space is allocated as necessary to store the 
pathname.
      This space may later be free(3)'d.
-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: ler@???
US Mail: 7011 W Parmer Ln, Apt 1115, Austin, TX 78729-6961