Welcome! Log In Create A New Profile

Advanced

Re: nginx 0day exploit for nginx + fastcgi PHP

Ian M. Evans
May 22, 2010 05:46AM
On 5/22/2010 3:54 AM, Igor Sysoev wrote:
> On Sat, May 22, 2010 at 02:56:02AM -0400, Ian Evans wrote:
>
>>
>> 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 $PI;
>>>>>>> }
>>>>>>>
>>>>>>
>>>>>> And this will work with cgi.fix-pathinfo=0? Just want to confirm
>>>> since I
>>>>>> only have my production server to test on. Guess I really need to dig
>>>> out
>>>>>> an old computer one day and just set it up as a local test server.
>>>>>
>>>>> It should work in 0.8.32+. What nginx version do you use ?
>>>>> You may create similar locations
>>>>>
>>>>> location ~ ^/(?<SN>CR|NEWS|...)(?<PI>/.*$|$) {
>>>>>
>>>>> to test.
>>>>>
>>>>>
>>>>
>>>> Igor, I upgrade to the latest 0.8.x. But when I ran
>>>> /usr/local/nginx/sbin/nginx -t on the location changes you suggested I
>>>> rec'd this error:
>>>>
>>>> [emerg]: pcre_compile() failed: unrecognized character after (?< in
>>>> "^/(?<SN>cr|news|poll|posters|photos|profile|review)(?<PI>/.*$|$)" at
>>>> "SN>cr|news|poll|posters|photos|profile|review)(?<PI>/.*$|$)"
>>>
>>> If nginx fails to start and displays the error message:
>>>
>>> pcre_compile() failed: unrecognized character after (?< in ...
>>>
>>> this means that the PCRE library is old and you should try the
>>> syntax ?P<name>.
>>
>> That's now tossing a "pcre_compile() failed: missing )"
>>
>> Your second location suggestion for me was:
>>
>> location ~
>> ^(?P<SN>.*/(cr|news|poll|posters|photos|profile|review)(?P<PI>/.*$|$)
>>
>> Looking at that line I do see three '(' and only two ')'. I suck at regex,
>> so I don't know where the third ')' needs to go. :-)
>
> - ^(?P<SN>.*/(cr|news|poll|posters|photos|profile|review)(?P<PI>/.*$|$)
> + ^(?P<SN>.*/(cr|news|poll|posters|photos|profile|review))(?P<PI>/.*$|$)
>

Man, oh, man. Having one of those nights. The correction fixes the last
problem but I'm now getting an [emerg]: unknown "sn" variable

_______________________________________________
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: 69
Record Number of Users: 6 on February 13, 2018
Record Number of Guests: 254 on July 05, 2018
Powered by nginx      Powered by FreeBSD      PHP Powered      Powered by MariaDB      ipv6 ready