Nuke Cops Security Check Can By Bypassed Letting Remote Users Determine Installation Path
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SecurityTracker Alert ID: 1010363
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SecurityTracker URL: http://securitytracker.com/id?1010363
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CVE Reference: GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Jun 1 2004
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Impact: Disclosure of system information
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Exploit Included: Yes
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Description: A vulnerability was reported in Nuke Cops. A remote user may be able to determine the installation path.
"Squid" reported that a remote user can supply a specially crafted URL to bypass an internal security check mechanism and determine
the installation path. According to the report, some files implement a security check to ensure that the file is not directly accessed
by a remote user. This check can be defeated in some scripts, the report said.
A demonstration exploit URL is provided:
http://www.domain.com/admin/modules/blocks.p
hp/admin.php
Approximately 160 files are reported to be affected.
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Impact: A remote user can determine the installation path.
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Solution: No solution was available at the time of this entry.
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Vendor URL: www.nukecops.com/ (Links to External Site)
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Cause: Access control error, Input validation error
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Underlying OS: Linux (Any), UNIX (Any), Windows (Any)
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Reported By: Squid <squidsecurity@hushmail.com>
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Message History:
None.
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Source Message Contents
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Date: 1 Jun 2004 18:41:27 -0000
From: Squid <squidsecurity@hushmail.com>
Subject: [Squid 2004-betaNC-001] Inadequate Security Checking in NukeCops
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===========================================================================
===========================================================================
Advisory: 2004-betaNC-001
Affected Software: Nuke Cops betaNC PHP-Nuke Bundle w/ PHPNuke 6.5 and later
Affected Versions: all cvs versions
Main Developer: Paul Laudanski
Computer Cops (http://www.computercops.biz)
NukeCops (http://www.nukecops.com/)
Module Developers: See credits section below
Description:
-----------
betaNC PHP-Nuke Bundle is a fork of PhpNuke which has been customized with
some additional functionality and corrective code to eliminate user reported
software bugs. Created in mid-2003, this open source portal software is
maintained by the "official" PhpNuke developers at NukeCops
(http://www.nukecops.com/).
Vulnerability:
-------------
PhpNuke's software is a major component in this project thus it suffers
from the same security weakness as its parent.
In an effort to secure files from being directly accessed by outside visitors,
developers added a simple security checking mechanism. If the checker
evaluates to false, the remaining code inside the file is executed. If it
evaluates to true, the script aborts or the visitor is redirected to another
page.
The process consists of capturing the currently executing script's path and
filename with the global variable $_SERVER['PHP_SELF']. Using PHP's built-in
function eregi(), this value is then compared against the script's name
which should be the sole access point.
Example:
if (!eregi("admin.php", $_SERVER['PHP_SELF'])) { die ("Access Denied"); }
In this example, a file with the above snippet will continue executing if
it was accessed by another file containing the letters "admin.php" (without
quotes) otherwise the script aborts returning the words "Access Denied".
Using eregi() with the NOT logical operator as done by the developers
is a very poor way to control file access because anyone can easily
manipulate a URL and add the missing component thereby forcing the security
check to always evaluate to false and gain unfettered entry.
Exploitation Example:
---------------------
http://www.domain.com/admin/modules/blocks.php/admin.php
Impact:
------
In the majority of cases here, exploition of this vulnerability will display
full path disclosure and not continue further code execution where intrusion
or damage might occur. In a much smaller number of cases, the code may
continue executing and possibly allow outsiders unwanted access to some
restricted areas on the site. Those who have setup their servers to look in
the main directory when a file is not located in the current one may see
a higher percentage of unwanted access and a lower percentage of full path
disclosures than others.
betaNC's code was not analyzed on whether additional vulnerabilities are
possible due to this security weakness. However, files where potential SQL
injections might occur are flagged below.
Affected Files:
--------------
Although an effort was made to identify all affected files (~160 total of
which ~28 have no security check), we leave it up to the developers/users
to do their own verification to ensure no files were inadvertently missed.
Note 1 --> /admin/case/case.adminfaq.php
Note 1 --> /admin/case/case.authors.php
Note 1 --> /admin/case/case.backup.php
Note 1 --> /admin/case/case.banners.php
Note 1 --> /admin/case/case.blocks.php
Note 1 --> /admin/case/case.comments.php
Note 1 --> /admin/case/case.content.php
Note 1 --> /admin/case/case.download.php
Note 1 --> /admin/case/case.encyclopedia.php
Note 1 --> /admin/case/case.ephemerids.php
Note 1 --> /admin/case/case.forums.php
Note 1 --> /admin/case/case.groups.php
Note 1 --> /admin/case/case.links.php
Note 1 --> /admin/case/case.messages.php
Note 1 --> /admin/case/case.modules.php
Note 1 --> /admin/case/case.newsletter.php
Note 1 --> /admin/case/case.optimize.php
Note 1 --> /admin/case/case.polls.php
Note 1 --> /admin/case/case.referers.php
Note 1 --> /admin/case/case.reviews.php
Note 1 --> /admin/case/case.sections.php
Note 1 --> /admin/case/case.settings.php
Note 1 --> /admin/case/case.stories.php
Note 1 --> /admin/case/case.topics.php
Note 1 --> /admin/case/case.tracking.php
Note 1 --> /admin/case/case.users.php
Note 2 --> /admin/links/links.addstory.php
Note 2 --> /admin/links/links.backup.php
Note 2 --> /admin/links/links.banners.php
Note 2 --> /admin/links/links.blocks.php
Note 2 --> /admin/links/links.content.php
Note 2 --> /admin/links/links.download.php
Note 2 --> /admin/links/links.editadmins.php
Note 2 --> /admin/links/links.editusers.php
Note 2 --> /admin/links/links.encyclopedia.php
Note 2 --> /admin/links/links.ephemerids.php
Note 2 --> /admin/links/links.faq.php
Note 2 --> /admin/links/links.forums.php
Note 2 --> /admin/links/links.groups.php
Note 2 --> /admin/links/links.httpreferers.php
Note 2 --> /admin/links/links.messages.php
Note 2 --> /admin/links/links.modules.php
Note 2 --> /admin/links/links.newsletter.php
Note 2 --> /admin/links/links.optimize.php
Note 2 --> /admin/links/links.reviews.php
Note 2 --> /admin/links/links.sections.php
Note 2 --> /admin/links/links.settings.php
Note 2 --> /admin/links/links.submissions.php
Note 2 --> /admin/links/links.surveys.php
Note 2 --> /admin/links/links.topics.php
Note 2 --> /admin/links/links.tracking.php
Note 2 --> /admin/links/links.weblinks.php
Note 3 --> /admin/modules/adminfaq.php
Note 3 --> /admin/modules/authors.php
Note 3 --> /admin/modules/backup.php
Note 3 --> /admin/modules/banners.php
Note 3 --> /admin/modules/blocks.php
Note 3 --> /admin/modules/comments.php
Note 3 --> /admin/modules/content.php
Note 3 --> /admin/modules/download.php
Note 3 --> /admin/modules/encyclopedia.php
Note 3 --> /admin/modules/ephemerids.php
Note 3 --> /admin/modules/forums.php
Note 3 --> /admin/modules/groups.php
Note 3 --> /admin/modules/links.php
Note 3 --> /admin/modules/messages.php
Note 3 --> /admin/modules/modules.php
Note 3 --> /admin/modules/newsletter.php
Note 3 --> /admin/modules/optimize.php
Note 3 --> /admin/modules/polls.php
Note 3 --> /admin/modules/referers.php
Note 3 --> /admin/modules/reviews.php
Note 3 --> /admin/modules/sections.php
Note 3 --> /admin/modules/settings.php
Note 3 --> /admin/modules/stories.php
Note 3 --> /admin/modules/topics.php
Note 3 --> /admin/modules/tracking.php
Note 3 --> /admin/modules/users.php
Note 4 --> /db/db.php
Note 1 --> /modules/AvantGo/index.php
Note 1 --> /modules/AvantGo/print.php
Note 1 --> /modules/Bookmarks/del_cat.php
Note 1 --> /modules/Bookmarks/del_mark.php
Note 5 --> /modules/Bookmarks/edit_cat.php
Note 5 --> /modules/Bookmarks/edit_mark.php
Note 1 --> /modules/Bookmarks/index.php
Note 1 --> /modules/Bookmarks/marks.php
Note 5 --> /modules/Bookmarks/uploadbookmarks.php
Note 1 --> /modules/Content/index.php
Note 1 --> /modules/Downloads/index.php
Note 6 --> /modules/Downloads/voteinclude.php
Note 1 --> /modules/Encyclopedia/index.php
Note 1 --> /modules/Encyclopedia/search.php
Note 1 --> /modules/FAQ/index.php
Note 1 --> /modules/Feedback/index.php
Note 1 --> /modules/Forums/buddylist.php
Note 1 --> /modules/Forums/faq.php
Note 1 --> /modules/Forums/groupcp.php
Note 1 --> /modules/Forums/ignore.php
Note 1 --> /modules/Forums/index.php
Note 1 --> /modules/Forums/login.php
Note 1 --> /modules/Forums/modcp.php
Note 1 --> /modules/Forums/nukebb.php
Note 1 --> /modules/Forums/posting.php
Note 1 --> /modules/Forums/profile.php
Note 1 --> /modules/Forums/ranks.php
Note 1 --> /modules/Forums/search.php
Note 1 --> /modules/Forums/staff.php
Note 1 --> /modules/Forums/topics.php
Note 1 --> /modules/Forums/viewforum.php
Note 1 --> /modules/Forums/viewonline.php
Note 1 --> /modules/Forums/viewtopic.php
Note 1 --> /modules/Journal/add.php
Note 1 --> /modules/Journal/comment.php
Note 1 --> /modules/Journal/commentkill.php
Note 1 --> /modules/Journal/commentsave.php
Note 1 --> /modules/Journal/delete.php
Note 1 --> /modules/Journal/deleteyes.php
Note 1 --> /modules/Journal/display.php
Note 1 --> /modules/Journal/edit.php
Note 1 --> /modules/Journal/friend.php
Note 1 --> /modules/Journal/functions.php
Note 1 --> /modules/Journal/index.php
Note 1 --> /modules/Journal/modify.php
Note 1 --> /modules/Journal/savenew.php
Note 1 --> /modules/Journal/search.php
Note 1 --> /modules/Members_List/index.php
Note 1 --> /modules/News/allindex.php
Note 1 --> /modules/News/article.php
Note 1 --> /modules/News/associates.php
Note 1 --> /modules/News/categories.php
Note 1 --> /modules/News/comments.php
Note 1 --> /modules/News/friend.php
Note 1 --> /modules/News/index.php
Note 1 --> /modules/News/print.php
Note 3 --> /modules/Private_Messages/index.php
Note 1 --> /modules/Recommend_Us/index.php
Note 1 --> /modules/Resend_Email/index.php
Note 1 --> /modules/Reviews/index.php
Note 1 --> /modules/Search/index.php
Note 1 --> /modules/Sections/index.php
Note 1 --> /modules/Statistics/index.php
Note 1 --> /modules/Stories_Archive/index.php
Note 1 --> /modules/Submit_News/index.php
Note 1 --> /modules/Surveys/comments.php
Note 1 --> /modules/Surveys/index.php
Note 1 --> /modules/Top/index.php
Note 1 --> /modules/Topics/index.php
Note 1 --> /modules/Web_Links/index.php
Note 6 --> /modules/Web_Links/voteinclude.php
Note 1 --> /modules/Web_Links/class.rc4crypt.php
Note 1 --> /modules/Web_Links/compose.php
Note 1 --> /modules/Web_Links/inbox.php
Note 1 --> /modules/Web_Links/index.php
Note 1 --> /modules/Web_Links/mailheader.php
Note 1 --> /modules/Web_Links/nlmail.php
Note 1 --> /modules/Web_Links/readmail.php
Note 1 --> /modules/Web_Links/settings.php
Note 1 --> /modules/Your_Account/index.php
Note 2 --> /modules/Your_Account/navbar.php
Note 1: Vulnerabilty: Full path disclosure for servers not setup to check
the main directory when a file is not located in the current
directory otherwise the rest of the code is executed.
Note 2: Vulnerability: Full path disclosure. File has no security check.
Note 3: Vulnerability: Full path disclosure. Possibility of SQL injection
IF the database abstraction layer can be executed while accessing
this file.
Note 4: Vulnerabilty: Full path disclosure or the code can be made to execute
passing in proper variable values. File has no security check.
Note 5: Vulnerabilty: Full path disclosure.
Note 6: Vulnerabilty: Full path disclosure for servers not setup to check the
main directory when a file is not located in the current directory
otherwise the rest of the code is executed. File has no security check.
Credits -- Module Developers:
----------------------------
Admin FAQ/Authors/AvantGo/Backup/Banners/Blocks/Comments/Content/
Download/Encyclopedia/Ephemerids/Groups/Links/Messages/Modules/
News/Newsletter/Polls/Recommend Us/Referers/Reviews/Search/Sections/
Settings/Statistics/Stories/Stories Archive/Submit News/Surveys/Top/
Topics/Users/Web Links:
- Francisco Burzi (http://www.phpnuke.org)
- chatserv (http://www.nukefixes.com) (http://www.nukeresources.com)
Bookmarks/Journal/News/Tracking:
- Paul Laudanski and his team from Computer Cops (http://www.computercops.biz)
and NukeCops (http://www.nukecops.com/) "Official" PhpNuke Developers
Admin FAQ:
- Richard Tirtadji AKA King Richard (http://www.nukeaddon.com)
- Hutdik Hermawan AKA hotFix (http://www.nukeaddon.com)
AvantGo:
- Tim Litwiller (http://linux.made-to-order.net)
Backup:
- Thomas Rudant (http://www.grunk.net) (http://www.securite-internet.org)
Bookmarks:
- David Moulton (http://www.themoultons.net)
Comments:
- Oleg [Dark Pastor] Martos (http://www.rolemancer.ru)
Forums/Members List/Private Messages (PHPBB2 forums code ported to PHPNuke):
- The phpBB Group (http://www.phpbb.com)
- Tom Nitzschner (http://bbtonuke.sourceforge.net) (http://www.toms-home.com)
- Paul Laudanski and his team from Computer Cops (http://www.computercops.biz)
and NukeCops (http://www.nukecops.com/) "Official" PhpNuke Developers
- chatserv (http://www.nukefixes.com) (http://www.nukeresources.com)
Journal:
- Joseph Howard (Member's Journal)
- Trevor Scott (Atomic Journal)
Links:
- James Knickelbein (http://www.journeymilwaukee.com)
Optimize:
- Xavier JULIE (http://www.securite-internet.org)
- chatserv (http://www.nukefixes.com) (http://www.nukeresources.com)
Resend Email:
- Gaylen Fraley (http://gaylenandmargie.com/phpwebsite)
Reviews:
- Jeff Lambert (http://www.qchc.com)
Statistics:
- Harry Mangindaan (http://www.nuketest.com)
- Sudirman (http://www.nuketest.com)
Tracking:
- WebStyle (http://www.wstyle.org)
Web Links:
- James Knickelbein (http://www.journeymilwaukee.com)
WebMail:
- Sivaprasad R.L (http://netlogger.net)
- Don Grabowski (http://ecomjunk.com)
- Akan Nkweini (http://www.p3mail.com)
- Leo West
Your Account:
- Francisco Burzi (http://www.phpnuke.org)
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