Bug #73708 [Opn]: php .user.ini conf file design issue resulting in bypass

From:	tr3jer at gmail dot com	Date:	Sat, 10 Dec 2016 12:01:32 +0000
Subject:	Bug #73708 [Opn]: php .user.ini conf file design issue resulting in bypass
References:	1	Groups:	php.bugs
Request:	Send a blank email to php-bugs+get-205891@lists.php.net to get a copy of this message

Edit report at https://bugs.php.net/bug.php?id=73708&edit=1

 ID:                 73708
 User updated by:    tr3jer at gmail dot com
 Reported by:        tr3jer at gmail dot com
 Summary:            php .user.ini conf file design issue resulting in
                     bypass
 Status:             Open
 Type:               Bug
 Package:            *Configuration Issues
-Operating System:   centos
+Operating System:   all
 PHP Version:        Irrelevant
 Block user comment: N
 Private report:     N

 New Comment:

os is all


Previous Comments:
------------------------------------------------------------------------
[2016-12-10 11:50:29] tr3jer at gmail dot com

Description:
------------
hello! php security team.I find one .user.ini vulnerabilityinfluences all have .user.ini php
versionstest verision = php5.4.user.ini Can be configured open_basedir，so...here i use
open_basedir as exampleimage1:http://7xiw31.com1.z0.glb.clouddn.com/QQ20161210-1@2x.pngSo
that attackers can not cross this directory and read system fileimage2:http://7xiw31.com1.z0.glb.clouddn.com/QQ20161210-0@2x.pngI
think .user.ini just The current directory takes effect，so...again write one .user.ini And the
original Do not conflict？

Test script:
---------------
We just have upload file Permissions：image3:http://7xiw31.com1.z0.glb.clouddn.com/QQ20161210-4@2x.pngcreate
new directory and write new .user.ini：open_basedir=/image4:http://7xiw31.com1.z0.glb.clouddn.com/QQ20161210-1@2x.pngyep！don't
need restart，just wait a few minutes，can bypass .user.ini limit：image5:http://7xiw31.com1.z0.glb.clouddn.com/QQ20161210-3@2x.png



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Edit this bug report at https://bugs.php.net/bug.php?id=73708&edit=1


   

Thread (5 messages)

• tr3jer at gmail dot comSat, 10 Dec 2016 11:50:34 +0000
  • tr3jer at gmail dot comSat, 10 Dec 2016 12:01:32 +0000Bug #73708 [Opn]: php .user.ini conf file design issue resulting in bypass
  • requinix@php.netSat, 10 Dec 2016 12:26:06 +0000Bug #73708 [Opn]: php .user.ini conf file design issue resulting in bypass
  • tr3jer at gmail dot comSun, 11 Dec 2016 07:48:47 +0000Bug #73708 [Opn]: php .user.ini conf file design issue resulting in bypass
  • cmb@php.netTue, 16 Mar 2021 12:26:07 +0000Bug #73708 [Opn->Nab]: php .user.ini conf file design issue resulting in bypass