Fix for bug 77473, bug 74032, and bug 85472: Passwords are no longer stored in plaintext in the database. Passwords are no longer encrypted with MySQL's ENCRYPT() function (because it doesn't work on some installs), but with Perl's crypt() function. The crypt-related routines now properly deal with salts so that they work on systems that use methods other than UNIX crypt to crypt the passwords (such as MD5). Checksetup.pl will walk through your database and re-crypt everyone's passwords based on the plaintext password entry, then drop the plaintext password column. As a consequence of no longer having a plaintext password, it is no longer possible to email someone their password, so the login screen has been changed to request a password reset instead. The user is emailed a temporary identifying token, with a link back to Bugzilla. They click on the link or paste it into their browser and Bugzilla allows them to change their password.

Patch by Myk Melez <myk@mozilla.org>
r= justdave@syndicomm.com, jake@acutex.net

1 files changed, 184 insertions, 0 deletions

diff --git a/Token.pm b/Token.pm
new file mode 100644
index 000000000..cde97f87e
--- /dev/null
+++ b/Token.pm
@@ -0,0 +1,184 @@
+#!/usr/bonsaitools/bin/perl -w
+# -*- Mode: perl; indent-tabs-mode: nil -*-
+#
+# The contents of this file are subject to the Mozilla Public
+# License Version 1.1 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS
+# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# rights and limitations under the License.
+#
+# The Original Code is the Bugzilla Bug Tracking System.
+#
+# The Initial Developer of the Original Code is Netscape Communications
+# Corporation. Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation. All
+# Rights Reserved.
+#
+# Contributor(s):    Myk Melez <myk@mozilla.org>
+
+################################################################################
+# Module Initialization
+################################################################################
+
+# Make it harder for us to do dangerous things in Perl.
+use diagnostics;
+use strict;
+
+# Bundle the functions in this file together into the "Token" package.
+package Token;
+
+# This module requires that its caller have said "require CGI.pl" to import
+# relevant functions from that script and its companion globals.pl.
+
+################################################################################
+# Functions
+################################################################################
+
+sub IssuePasswordToken {
+    # Generates a random token, adds it to the tokens table, and sends it
+    # to the user with instructions for using it to change their password.
+
+    my ($loginname) = @_;
+
+    # Retrieve the user's ID from the database.
+    my $quotedloginname = &::SqlQuote($loginname);
+    &::SendSQL("SELECT userid FROM profiles WHERE login_name = $quotedloginname");
+    my ($userid) = &::FetchSQLData();
+
+    # Generate a unique token and insert it into the tokens table.
+    # We have to lock the tokens table before generating the token, 
+    # since the database must be queried for token uniqueness.
+    &::SendSQL("LOCK TABLE tokens WRITE");
+    my $token = GenerateUniqueToken();
+    my $quotedtoken = &::SqlQuote($token);
+    my $quotedipaddr = &::SqlQuote($::ENV{'REMOTE_ADDR'});
+    &::SendSQL("INSERT INTO tokens ( userid , issuedate , token , tokentype , eventdata )
+                VALUES      ( $userid , NOW() , $quotedtoken , 'password' , $quotedipaddr )");
+    &::SendSQL("UNLOCK TABLES");
+
+    # Mail the user the token along with instructions for using it.
+    MailPasswordToken($loginname, $token);
+
+}
+
+
+sub GenerateUniqueToken {
+    # Generates a unique random token.  Uses &GenerateRandomPassword 
+    # for the tokens themselves and checks uniqueness by searching for
+    # the token in the "tokens" table.  Gives up if it can't come up
+    # with a token after about one hundred tries.
+
+    my $token;
+    my $duplicate = 1;
+    my $tries = 0;
+    while ($duplicate) {
+
+        ++$tries;
+        if ($tries > 100) {
+            &::DisplayError("Something is seriously wrong with the token generation system.");
+            exit;
+        }
+
+        $token = &::GenerateRandomPassword();
+        &::SendSQL("SELECT userid FROM tokens WHERE token = " . &::SqlQuote($token));
+        $duplicate = &::FetchSQLData();
+    }
+
+    return $token;
+
+}
+
+sub MailPasswordToken {
+    # Emails a password token to a user along with instructions for its use.
+    # Called exclusively from &IssuePasswordToken.
+
+    my ($emailaddress, $token) = @_;
+
+    my $urlbase = &::Param("urlbase");
+    my $emailsuffix = &::Param('emailsuffix');
+
+    open SENDMAIL, "|/usr/lib/sendmail -t";
+
+    print SENDMAIL qq|From: bugzilla-daemon
+To: $emailaddress$emailsuffix
+Subject: Bugzilla Change Password Request
+
+You or someone impersonating you has requested to change your Bugzilla
+password.  To change your password, visit the following link:
+
+${urlbase}token.cgi?a=cfmpw&t=$token
+
+If you are not the person who made this request, or you wish to cancel
+this request, visit the following link:
+
+${urlbase}token.cgi?a=cxlpw&t=$token
+|;
+    close SENDMAIL;
+}
+
+sub Cancel {
+    # Cancels a previously issued token and notifies the system administrator.
+    # This should only happen when the user accidentally makes a token request
+    # or when a malicious hacker makes a token request on behalf of a user.
+    
+    my ($token, $cancelaction) = @_;
+
+    # Quote the token for inclusion in SQL statements.
+    my $quotedtoken = &::SqlQuote($token);
+    
+    # Get information about the token being cancelled.
+    &::SendSQL("SELECT  issuedate , tokentype , eventdata , login_name , realname
+                FROM    tokens, profiles 
+                WHERE   tokens.userid = profiles.userid
+                AND     token = $quotedtoken");
+    my ($issuedate, $tokentype, $eventdata, $loginname, $realname) = &::FetchSQLData();
+
+    # Get the email address of the Bugzilla maintainer.
+    my $maintainer = &::Param('maintainer');
+
+    # Format the user's real name and email address into a single string.
+    my $username = $realname ? $realname . " <" . $loginname . ">" : $loginname;
+
+    # Notify the user via email about the cancellation.
+    open SENDMAIL, "|/usr/lib/sendmail -t";
+    print SENDMAIL qq|From: bugzilla-daemon
+To: $username
+Subject: "$tokentype" token cancelled
+
+A token was cancelled from $::ENV{'REMOTE_ADDR'}.  This is either 
+an honest mistake or the result of a malicious hack attempt.  
+Take a look at the information below and forward this email 
+to $maintainer if you suspect foul play.
+
+            Token: $token
+       Token Type: $tokentype
+             User: $username
+       Issue Date: $issuedate
+       Event Data: $eventdata
+
+Cancelled Because: $cancelaction
+|;
+    close SENDMAIL;
+
+    # Delete the token from the database.
+    &::SendSQL("LOCK TABLE tokens WRITE");
+    &::SendSQL("DELETE FROM tokens WHERE token = $quotedtoken");
+    &::SendSQL("UNLOCK TABLES");
+}
+
+sub HasPasswordToken {
+    # Returns a password token if the user has one.  Otherwise returns 0 (false).
+    
+    my ($userid) = @_;
+    
+    &::SendSQL("SELECT token FROM tokens WHERE userid = $userid LIMIT 1");
+    my ($token) = &::FetchSQLData();
+    
+    return $token;
+}
+
+1;