Welcome! Log In Create A New Profile

Advanced

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian Evans
May 22, 2010 03:00AM
On Sat, May 22, 2010 1:27 am, Igor Sysoev wrote:
> On Sat, May 22, 2010 at 01:24:02AM -0400, Ian M. Evans wrote:
>
>> On 5/21/2010 5:17 PM, Igor Sysoev wrote:
>> > On Fri, May 21, 2010 at 04:50:26PM -0400, Ian Evans wrote:
>> >
>> >>
>> >> On Fri, May 21, 2010 4:39 pm, Igor Sysoev wrote:
>> >>> On Fri, May 21, 2010 at 03:04:18PM -0400, Ian M. Evans wrote:
>> >>>
>> >>>> On 5/21/2010 2:36 PM, Igor Sysoev wrote:
>> >>>>> On Fri, May 21, 2010 at 02:26:31PM -0400, Ian Evans wrote:
>> >>>>>
>> >>>>>> Is this situation only pertaining to sites that allow uploads
>> from
>> >>>> forms?
>> >>>>>>
>> >>>>>> Going way back to this thread
>> >>>>>> (http://www.ruby-forum.com/topic/145358#645652) in '08, I needed
>> >>>>>> cgi.fix-pathinfo=1 to fix problems with paths and specific
>> >>>> extensionless
>> >>>>>> files I needed run as php.
>> >>>>>>
>> >>>>>> Changing cgi.fix-pathinfo=1 to 0 broke a lot of stuff.
>> >>>>>
>> >>>>> Could you show again how URIs should be mapped to SCRIPT_FILENAME
>> >>>>> and PATH_INFO ? Modern nginx versions support named captures in
>> regex.
>> >>>>>
>> >>>>>
>> >>>>
>> >>>> This is what you came up with in the thread back in '08:
>> >>>>
>> >>>> location ~
>> ^/(cr|news|poll|posters|photos|profile|review)(/|$) {
>> >>>> root /usr/local/apache/htdocs;
>> >>>> set $script_name $uri;
>> >>>> set $path_info "";
>> >>>>
>> >>>> if ($uri ~ ^(/[^/]+)(/.*)) {
>> >>>> set $script_name $1;
>> >>>> set $path_info $2;
>> >>>> fastcgi_pass 127.0.0.1:10004;
>> >>>> }
>> >>>> ...
>> >>>> fastcgi_param SCRIPT_FILENAME
>> $document_root$script_name;
>> >>>> fastcgi_param PATH_INFO $path_info;
>> >>>> }
>> >>>> location ~
>> /(cr|news|poll|posters|photos|profile|review)(/|$) {
>> >>>> root /usr/local/apache/htdocs;
>> >>>> set $script_name $uri;
>> >>>> set $path_info "";
>> >>>> if ($uri ~
>> >>>> ^(.*/(?:cr|news|poll|posters|photos|profile|review))(/.*)) {
>> >>>> set $script_name $1;
>> >>>> set $path_info $2;
>> >>>> fastcgi_pass 127.0.0.1:10004;
>> >>>> }
>> >>>> ...
>> >>>> fastcgi_param SCRIPT_FILENAME $document_root$script_name;
>> >>>> fastcgi_param PATH_INFO $path_info;
>> >>>> fastcgi_pass 127.0.0.1:10004;
>> >>>> }
>> >>>>
>> >>>> The two variations were needed to handle when the extensionless php
>> >>>> script file was in the root (example.com/NEWS/2006/1/24) or several
>> >>>> subdirs down (example.com/tiff/2007/1/PHOTOS/16)
>> >>>
>> >>> location ~
>> >>> ^/(?<SN>cr|news|poll|posters|photos|profile|review)(?<PI>/.*$|$) {
>> >>> root /usr/local/apache/htdocs;
>> >>> fastcgi_pass 127.0.0.1:10004;
>> >>> fastcgi_param SCRIPT_FILENAME $document_root/$SN;
>> >>> fastcgi_param PATH_INFO $PI;
>> >>> }
>> >>>
>> >>> location ~
>> >>> ^(?<SN>.*/(cr|news|poll|posters|photos|profile|review)(?<PI>/.*$|$)
>> {
>> >>> root /usr/local/apache/htdocs;
>> >>> fastcgi_pass 127.0.0.1:10004;
>> >>> fastcgi_param SCRIPT_FILENAME $document_root$SN;
>> >>> fastcgi_param PATH_INFO $PI;
>> >>> }
>> >>>
>> >>
>> >> And this will work with cgi.fix-pathinfo=0? Just want to confirm
>> since I
>> >> only have my production server to test on. Guess I really need to dig
>> out
>> >> an old computer one day and just set it up as a local test server.
>> >
>> > It should work in 0.8.32+. What nginx version do you use ?
>> > You may create similar locations
>> >
>> > location ~ ^/(?<SN>CR|NEWS|...)(?<PI>/.*$|$) {
>> >
>> > to test.
>> >
>> >
>>
>> Igor, I upgrade to the latest 0.8.x. But when I ran
>> /usr/local/nginx/sbin/nginx -t on the location changes you suggested I
>> rec'd this error:
>>
>> [emerg]: pcre_compile() failed: unrecognized character after (?< in
>> "^/(?<SN>cr|news|poll|posters|photos|profile|review)(?<PI>/.*$|$)" at
>> "SN>cr|news|poll|posters|photos|profile|review)(?<PI>/.*$|$)"
>
> If nginx fails to start and displays the error message:
>
> pcre_compile() failed: unrecognized character after (?< in ...
>
> this means that the PCRE library is old and you should try the
> syntax ?P<name>.

That's now tossing a "pcre_compile() failed: missing )"

Your second location suggestion for me was:

location ~
^(?P<SN>.*/(cr|news|poll|posters|photos|profile|review)(?P<PI>/.*$|$)

Looking at that line I do see three '(' and only two ')'. I suck at regex,
so I don't know where the third ')' needs to go. :-)


_______________________________________________
nginx mailing list
nginx@nginx.org
http://nginx.org/mailman/listinfo/nginx
Subject Author Posted

nginx 0day exploit for nginx + fastcgi PHP

Avleen Vig May 21, 2010 01:14PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Avleen Vig May 21, 2010 01:30PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Eren Türkay May 25, 2010 11:44AM

Re: nginx 0day exploit for nginx + fastcgi PHP

mike May 21, 2010 01:30PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 21, 2010 01:36PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 21, 2010 01:44PM

Re: nginx 0day exploit for nginx + fastcgi PHP

mike May 21, 2010 01:52PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 21, 2010 02:16PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian Evans May 21, 2010 02:30PM

Re: nginx 0day exploit for nginx + fastcgi PHP

mike May 21, 2010 02:40PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 21, 2010 02:40PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian M. Evans May 21, 2010 03:10PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 21, 2010 04:46PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian Evans May 21, 2010 04:58PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 21, 2010 05:20PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian Evans May 21, 2010 05:54PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 22, 2010 02:10AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian M. Evans May 22, 2010 01:28AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 22, 2010 01:32AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian Evans May 22, 2010 03:00AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 22, 2010 03:58AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian M. Evans May 22, 2010 05:46AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 22, 2010 06:12AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian M. Evans May 22, 2010 06:22AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 22, 2010 06:26AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian M. Evans May 22, 2010 06:56AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian M. Evans May 22, 2010 08:22AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Igor Sysoev May 22, 2010 08:30AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian M. Evans May 22, 2010 08:48AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian M. Evans May 22, 2010 06:30PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Jérôme Loyet May 21, 2010 03:50PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Weibin Yao May 23, 2010 11:24PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Jérôme Loyet May 24, 2010 03:00AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Weibin Yao May 24, 2010 04:20AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Cliff Wells May 21, 2010 09:00PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Grzegorz Sienko May 21, 2010 09:24PM

Re: nginx 0day exploit for nginx + fastcgi PHP

mike May 21, 2010 09:34PM

Re: nginx 0day exploit for nginx + fastcgi PHP

gdork January 26, 2011 11:07PM

Re: nginx 0day exploit for nginx + fastcgi PHP

mike January 26, 2011 11:16PM

Re: nginx 0day exploit for nginx + fastcgi PHP

edogawaconan January 27, 2011 12:28AM

Re: nginx 0day exploit for nginx + fastcgi PHP

mike January 27, 2011 01:08AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Cliff Wells May 21, 2010 10:42PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Ding Deng May 22, 2010 09:28AM

Re: nginx 0day exploit for nginx + fastcgi PHP

mike May 22, 2010 03:30PM

Re: nginx 0day exploit for nginx + fastcgi PHP

brianmercer May 21, 2010 05:03PM

Re: nginx 0day exploit for nginx + fastcgi PHP

tuurtnt December 14, 2011 06:26PM

Re: nginx 0day exploit for nginx + fastcgi PHP

Kraiser February 17, 2012 09:53AM

Re: nginx 0day exploit for nginx + fastcgi PHP

Reinis Rozitis February 17, 2012 11:42AM

Re: nginx 0day exploit for nginx + fastcgi PHP

zsero October 30, 2012 01:01PM



Sorry, only registered users may post in this forum.

Click here to login

Online Users

Guests: 265
Record Number of Users: 8 on April 13, 2023
Record Number of Guests: 500 on July 15, 2024
Powered by nginx      Powered by FreeBSD      PHP Powered      Powered by MariaDB      ipv6 ready