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Date: Sun, 04 Mar 2012 20:10:48 -0700
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: Florian Weimer <fw@...eb.enyo.de>
Subject: Re: CVE Request: XML entity expansion in the XML::Atom
Perl module
On 03/04/2012 09:07 AM, Florian Weimer wrote:
> I would like to request a CVE name for this security fix:
>
> | 0.39 2011.06.20
> | * Disabled external entities and network to avoid possible security flaw (yannk)
>
> <http://cpansearch.perl.org/src/MIYAGAWA/XML-Atom-0.39/Changes>
>
> Thanks.
Please use CVE-2012-1102 for this issue. PS in future if you could
include information like the following that would be helpful to all:
--- XML-Atom-0.38/lib/XML/Atom.pm 2011-05-22 23:35:44.000000000 -0600
+++ XML-Atom-0.39/lib/XML/Atom.pm 2011-06-20 23:35:51.000000000 -0600
@@ -4,7 +4,7 @@
use strict;
use 5.008_001;
-our $VERSION = '0.38';
+our $VERSION = '0.39';
BEGIN {
@XML::Atom::EXPORT = qw( LIBXML DATETIME);
@@ -35,6 +35,26 @@
$XML::Atom::DefaultVersion = 0.3;
}
+sub libxml_parser {
+ ## uses old XML::LibXML < 1.70 interface for compat reasons
+ return XML::LibXML->new(
+ #no_network => 1, # v1.63+
+ expand_xinclude => 0,
+ expand_entities => 1,
+ load_ext_dtd => 0,
+ ext_ent_handler => sub { warn "External entities disabled."; '' },
+ );
+}
+
+sub expat_parser {
+ return XML::Parser->new(
+ Handlers => {
+ ExternEnt => sub { warn "External Entities disabled."; '' },
+ ExternEntFin => sub {},
+ },
+ );
+}
+
use base qw( XML::Atom::ErrorHandler Exporter );
package XML::Atom::Namespace;
--
Kurt Seifried Red Hat Security Response Team (SRT)
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