From: Dave Lawrence <dlawrence@mozilla.com>
Date: Wed, 22 Feb 2012 15:19:27 +0000 (-0500)
Subject: Bug 725663 - (CVE-2012-0453) [SECURITY] CSRF vulnerability in the XML-RPC API when... 
X-Git-Tag: bugzilla-4.0.5~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=503e175ec7e67fc7a81b5d9d02a4888fe2060784;p=thirdparty%2Fbugzilla.git

Bug 725663 - (CVE-2012-0453) [SECURITY] CSRF vulnerability in the XML-RPC API when using mod_perl
r/a=LpSolit
---

diff --git a/Bugzilla/WebService/Constants.pm b/Bugzilla/WebService/Constants.pm
index 2c95f1eec2..c1230e3aed 100644
--- a/Bugzilla/WebService/Constants.pm
+++ b/Bugzilla/WebService/Constants.pm
@@ -24,6 +24,7 @@ our @EXPORT = qw(
     WS_ERROR_CODE
     ERROR_UNKNOWN_FATAL
     ERROR_UNKNOWN_TRANSIENT
+    XMLRPC_CONTENT_TYPE_WHITELIST
 
     CONTENT_TYPE_BLACKLIST
 
@@ -161,6 +162,8 @@ use constant WS_ERROR_CODE => {
     unknown_method       => -32601,
     json_rpc_post_only   => 32610,
     json_rpc_invalid_callback => 32611,
+    xmlrpc_illegal_content_type   => 32612, 
+    json_rpc_illegal_content_type => 32613, 
 };
 
 # These are the fallback defaults for errors not in ERROR_CODE.
@@ -177,6 +180,11 @@ use constant CONTENT_TYPE_BLACKLIST => qw(
     multipart/form-data
 );
 
+use constant XMLRPC_CONTENT_TYPE_WHITELIST => qw(
+    text/xml
+    application/xml
+);
+
 sub WS_DISPATCH {
     # We "require" here instead of "use" above to avoid a dependency loop.
     require Bugzilla::Hook;
diff --git a/Bugzilla/WebService/Server/XMLRPC.pm b/Bugzilla/WebService/Server/XMLRPC.pm
index b74d0eebdb..94d44fd019 100644
--- a/Bugzilla/WebService/Server/XMLRPC.pm
+++ b/Bugzilla/WebService/Server/XMLRPC.pm
@@ -72,10 +72,18 @@ use XMLRPC::Lite;
 our @ISA = qw(XMLRPC::Deserializer);
 
 use Bugzilla::Error;
+use Bugzilla::WebService::Constants qw(XMLRPC_CONTENT_TYPE_WHITELIST);
 use Scalar::Util qw(tainted);
 
 sub deserialize {
     my $self = shift;
+
+    # Only allow certain content types to protect against CSRF attacks
+    if (!grep($_ eq $ENV{'CONTENT_TYPE'}, XMLRPC_CONTENT_TYPE_WHITELIST)) {
+        ThrowUserError('xmlrpc_illegal_content_type',
+                       { content_type => $ENV{'CONTENT_TYPE'} });
+    }
+
     my ($xml) = @_;
     my $som = $self->SUPER::deserialize(@_);
     if (tainted($xml)) {
diff --git a/template/en/default/global/user-error.html.tmpl b/template/en/default/global/user-error.html.tmpl
index 5634a7af3e..9e11e36a69 100644
--- a/template/en/default/global/user-error.html.tmpl
+++ b/template/en/default/global/user-error.html.tmpl
@@ -1685,6 +1685,11 @@
     &lt;[% type FILTER html %]&gt; field. (See the XML-RPC specification
     for details.)
 
+  [% ELSIF error == "xmlrpc_illegal_content_type" %]
+    When using XML-RPC, you cannot send data as
+    [%+ content_type FILTER html %]. Only text/xml 
+    and application/xml are allowed.
+
   [% ELSIF error == "zero_length_file" %]
     [% title = "File Is Empty" %]
     The file you are trying to attach is empty, does not exist, or you don't