Bug 777398: (CVE-2012-1968) [SECURITY] HTML bugmail exposes information about restricted bugs

Bugzilla/Hook.pm

@@ -411,6 +411,12 @@ Sometimes this is C<undef>, meaning that we are parsing text that is
 not a bug comment (but could still be some other part of a bug, like
 the summary line).
 
+=item C<user>
+
+The L<Bugzilla::User> object representing the user who will see the text.
+This is useful to determine how much confidential information can be displayed
+to the user.
+
 =back
 
 =head2 bug_url_sub_classes

Bugzilla/Template.pm

@@ -139,8 +139,9 @@ sub get_format {
 # If you want to modify this routine, read the comments carefully
 
 sub quoteUrls {
-    my ($text, $bug, $comment) = (@_);
+    my ($text, $bug, $comment, $user) = @_;
     return $text unless $text;
+    $user ||= Bugzilla->user;
 
     # We use /g for speed, but uris can have other things inside them
     # (http://foo/bug#3 for example). Filtering that out filters valid
@@ -170,7 +171,7 @@ sub quoteUrls {
     my @hook_regexes;
     Bugzilla::Hook::process('bug_format_comment',
         { text => \$text, bug => $bug, regexes => \@hook_regexes,
-          comment => $comment });
+          comment => $comment, user => $user });
 
     foreach my $re (@hook_regexes) {
         my ($match, $replace) = @$re{qw(match replace)};
@@ -192,7 +193,7 @@ sub quoteUrls {
         map { qr/$_/ } grep($_, Bugzilla->params->{'urlbase'}, 
                             Bugzilla->params->{'sslbase'})) . ')';
     $text =~ s~\b(${urlbase_re}\Qshow_bug.cgi?id=\E([0-9]+)(\#c([0-9]+))?)\b
-              ~($things[$count++] = get_bug_link($3, $1, { comment_num => $5 })) &&
+              ~($things[$count++] = get_bug_link($3, $1, { comment_num => $5, user => $user })) &&
                ("\0\0" . ($count-1) . "\0\0")
               ~egox;
 
@@ -221,7 +222,7 @@ sub quoteUrls {
 
     # attachment links
     $text =~ s~\b(attachment\s*\#?\s*(\d+)(?:\s+\[details\])?)
-              ~($things[$count++] = get_attachment_link($2, $1)) &&
+              ~($things[$count++] = get_attachment_link($2, $1, $user)) &&
                ("\0\0" . ($count-1) . "\0\0")
               ~egmxi;
 
@@ -238,7 +239,7 @@ sub quoteUrls {
     $text =~ s~\b($bug_re(?:\s*,?\s*$comment_re)?|$comment_re)
               ~ # We have several choices. $1 here is the link, and $2-4 are set
                 # depending on which part matched
-               (defined($2) ? get_bug_link($2, $1, { comment_num => $3 }) :
+               (defined($2) ? get_bug_link($2, $1, { comment_num => $3, user => $user }) :
                               "<a href=\"$current_bugurl#c$4\">$1</a>")
               ~egox;
 
@@ -247,7 +248,7 @@ sub quoteUrls {
     $text =~ s~(?<=^\*\*\*\ This\ bug\ has\ been\ marked\ as\ a\ duplicate\ of\ )
                (\d+)
                (?=\ \*\*\*\Z)
-              ~get_bug_link($1, $1)
+              ~get_bug_link($1, $1, { user => $user })
               ~egmx;
 
     # Now remove the encoding hacks in reverse order
@@ -261,15 +262,18 @@ sub quoteUrls {
 
 # Creates a link to an attachment, including its title.
 sub get_attachment_link {
-    my ($attachid, $link_text) = @_;
+    my ($attachid, $link_text, $user) = @_;
     my $dbh = Bugzilla->dbh;
+    $user ||= Bugzilla->user;
 
     my $attachment = new Bugzilla::Attachment($attachid);
 
     if ($attachment) {
         my $title = "";
         my $className = "";
-        if (Bugzilla->user->can_see_bug($attachment->bug_id)) {
+        if ($user->can_see_bug($attachment->bug_id)
+            && (!$attachment->isprivate || $user->is_insider))
+        {
             $title = $attachment->description;
         }
         if ($attachment->isobsolete) {
@@ -309,6 +313,7 @@ sub get_attachment_link {
 sub get_bug_link {
     my ($bug, $link_text, $options) = @_;
     $options ||= {};
+    $options->{user} ||= Bugzilla->user;
     my $dbh = Bugzilla->dbh;
 
     if (defined $bug) {
@@ -688,10 +693,10 @@ sub create {
             clean_text => \&Bugzilla::Util::clean_text ,
 
             quoteUrls => [ sub {
-                               my ($context, $bug, $comment) = @_;
+                               my ($context, $bug, $comment, $user) = @_;
                                return sub {
                                    my $text = shift;
-                                   return quoteUrls($text, $bug, $comment);
+                                   return quoteUrls($text, $bug, $comment, $user);
                                };
                            },
                            1
@@ -707,10 +712,9 @@ sub create {
                           1
                         ],
 
-            bug_list_link => sub
-            {
-                my $buglist = shift;
-                return join(", ", map(get_bug_link($_, $_), split(/ *, */, $buglist)));
+            bug_list_link => sub {
+                my ($buglist, $options) = @_;
+                return join(", ", map(get_bug_link($_, $_, $options), split(/ *, */, $buglist)));
             },
 
             # In CSV, quotes are doubled, and any value containing a quote or a

template/en/default/email/bugmail.html.tmpl

@@ -20,12 +20,12 @@
       [% FOREACH comment = new_comments.reverse %]
         <div>
           [% IF comment.count %]
-            <b>[% "Comment # ${comment.count}" FILTER bug_link( bug, 
-              {comment_num => comment.count, full_url => 1}) FILTER none %] 
-              on [% "$terms.bug $bug.id" FILTER bug_link( bug, { full_url => 1 }) FILTER none %]
+            <b>[% "Comment # ${comment.count}" FILTER bug_link(bug,
+              {comment_num => comment.count, full_url => 1, user => to_user}) FILTER none %]
+              on [% "$terms.bug $bug.id" FILTER bug_link(bug, { full_url => 1, user => to_user }) FILTER none %]
               from [% INCLUDE global/user.html.tmpl who = comment.author %]</b>
           [% END %]
-        <pre>[% comment.body_full({ wrap => 1 }) FILTER quoteUrls(bug, comment) %]</pre>
+        <pre>[% comment.body_full({ wrap => 1 }) FILTER quoteUrls(bug, comment, to_user) %]</pre>
         </div>
       [% END %]
       </p>
@@ -58,13 +58,14 @@
           [% SET in_table = 0 %]
         [% END %]
         [% IF change.blocker %]
-              [% "${terms.Bug} ${bug.id}" FILTER bug_link(bug, full_url => 1) FILTER none  %] depends 
-              on [% "${terms.bug} ${change.blocker.id}" 
-                  FILTER bug_link(change.blocker, full_url => 1) FILTER none %],
+              [% "${terms.Bug} ${bug.id}" FILTER bug_link(bug, {full_url => 1, user => to_user}) FILTER none %]
+              depends on
+              [%+ "${terms.bug} ${change.blocker.id}"
+                  FILTER bug_link(change.blocker, {full_url => 1, user => to_user}) FILTER none %],
               which changed state.
         [% ELSE %]
-              [% INCLUDE global/user.html.tmpl who = change.who %]
-              changed [% "${terms.Bug} ${bug.id}" FILTER bug_link(bug, full_url => 1) FILTER none %]
+              [% INCLUDE global/user.html.tmpl who = change.who %] changed
+              [%+ "${terms.bug} ${bug.id}" FILTER bug_link(bug, {full_url => 1, user => to_user}) FILTER none %]
         [% END %]
           <br>
           [% IF in_table == 0 %]
@@ -88,7 +89,7 @@
           <th>[% field_label FILTER html %]</th>
           <td>
             [% IF change.field_name == "bug_id" %]
-              [% new_value FILTER bug_link(bug, full_url => 1) FILTER none %]
+              [% new_value FILTER bug_link(bug, {full_url => 1, user => to_user}) FILTER none %]
             [% ELSE %]
               [% new_value FILTER html %]
             [% END %]