<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Django 1.4.13 release notes — Django 1.5.9 documentation</title> <link rel="stylesheet" href="../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../', VERSION: '1.5.9', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <link rel="top" title="Django 1.5.9 documentation" href="../index.html" /> <link rel="up" title="Release notes" href="index.html" /> <link rel="next" title="Django 1.4.12 release notes" href="1.4.12.html" /> <link rel="prev" title="Django 1.4.14 release notes" href="1.4.14.html" /> <script type="text/javascript" src="../templatebuiltins.js"></script> <script type="text/javascript"> (function($) { if (!django_template_builtins) { // templatebuiltins.js missing, do nothing. return; } $(document).ready(function() { // Hyperlink Django template tags and filters var base = "../ref/templates/builtins.html"; if (base == "#") { // Special case for builtins.html itself base = ""; } // Tags are keywords, class '.k' $("div.highlight\\-html\\+django span.k").each(function(i, elem) { var tagname = $(elem).text(); if ($.inArray(tagname, django_template_builtins.ttags) != -1) { var fragment = tagname.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + tagname + "</a>"); } }); // Filters are functions, class '.nf' $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { var filtername = $(elem).text(); if ($.inArray(filtername, django_template_builtins.tfilters) != -1) { var fragment = filtername.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + filtername + "</a>"); } }); }); })(jQuery); </script> </head> <body> <div class="document"> <div id="custom-doc" class="yui-t6"> <div id="hd"> <h1><a href="../index.html">Django 1.5.9 documentation</a></h1> <div id="global-nav"> <a title="Home page" href="../index.html">Home</a> | <a title="Table of contents" href="../contents.html">Table of contents</a> | <a title="Global index" href="../genindex.html">Index</a> | <a title="Module index" href="../py-modindex.html">Modules</a> </div> <div class="nav"> « <a href="1.4.14.html" title="Django 1.4.14 release notes">previous</a> | <a href="index.html" title="Release notes" accesskey="U">up</a> | <a href="1.4.12.html" title="Django 1.4.12 release notes">next</a> »</div> </div> <div id="bd"> <div id="yui-main"> <div class="yui-b"> <div class="yui-g" id="releases-1.4.13"> <div class="section" id="s-django-1-4-13-release-notes"> <span id="django-1-4-13-release-notes"></span><h1>Django 1.4.13 release notes<a class="headerlink" href="#django-1-4-13-release-notes" title="Permalink to this headline">¶</a></h1> <p><em>May 14, 2014</em></p> <p>Django 1.4.13 fixes two security issues in 1.4.12.</p> <div class="section" id="s-caches-may-incorrectly-be-allowed-to-store-and-serve-private-data"> <span id="caches-may-incorrectly-be-allowed-to-store-and-serve-private-data"></span><h2>Caches may incorrectly be allowed to store and serve private data<a class="headerlink" href="#caches-may-incorrectly-be-allowed-to-store-and-serve-private-data" title="Permalink to this headline">¶</a></h2> <p>In certain situations, Django may allow caches to store private data related to a particular session and then serve that data to requests with a different session, or no session at all. This can lead to information disclosure and can be a vector for cache poisoning.</p> <p>When using Django sessions, Django will set a <tt class="docutils literal"><span class="pre">Vary:</span> <span class="pre">Cookie</span></tt> header to ensure caches do not serve cached data to requests from other sessions. However, older versions of Internet Explorer (most likely only Internet Explorer 6, and Internet Explorer 7 if run on Windows XP or Windows Server 2003) are unable to handle the <tt class="docutils literal"><span class="pre">Vary</span></tt> header in combination with many content types. Therefore, Django would remove the header if the request was made by Internet Explorer.</p> <p>To remedy this, the special behavior for these older Internet Explorer versions has been removed, and the <tt class="docutils literal"><span class="pre">Vary</span></tt> header is no longer stripped from the response. In addition, modifications to the <tt class="docutils literal"><span class="pre">Cache-Control</span></tt> header for all Internet Explorer requests with a <tt class="docutils literal"><span class="pre">Content-Disposition</span></tt> header have also been removed as they were found to have similar issues.</p> </div> <div class="section" id="s-malformed-redirect-urls-from-user-input-not-correctly-validated"> <span id="malformed-redirect-urls-from-user-input-not-correctly-validated"></span><h2>Malformed redirect URLs from user input not correctly validated<a class="headerlink" href="#malformed-redirect-urls-from-user-input-not-correctly-validated" title="Permalink to this headline">¶</a></h2> <p>The validation for redirects did not correctly validate some malformed URLs, which are accepted by some browsers. This allows a user to be redirected to an unsafe URL unexpectedly.</p> <p>Django relies on user input in some cases (e.g. <a class="reference internal" href="../topics/auth/default.html#django.contrib.auth.views.login" title="django.contrib.auth.views.login"><tt class="xref py py-func docutils literal"><span class="pre">django.contrib.auth.views.login()</span></tt></a>, <tt class="docutils literal"><span class="pre">django.contrib.comments</span></tt>, and <a class="reference internal" href="../topics/i18n/index.html"><em>i18n</em></a>) to redirect the user to an “on success” URL. The security checks for these redirects (namely <tt class="docutils literal"><span class="pre">django.util.http.is_safe_url()</span></tt>) did not correctly validate some malformed URLs, such as <cite>http:\\\djangoproject.com</cite>, which are accepted by some browsers with more liberal URL parsing.</p> <p>To remedy this, the validation in <tt class="docutils literal"><span class="pre">is_safe_url()</span></tt> has been tightened to be able to handle and correctly validate these malformed URLs.</p> </div> </div> </div> </div> </div> <div class="yui-b" id="sidebar"> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h3><a href="../contents.html">Table Of Contents</a></h3> <ul> <li><a class="reference internal" href="#">Django 1.4.13 release notes</a><ul> <li><a class="reference internal" href="#caches-may-incorrectly-be-allowed-to-store-and-serve-private-data">Caches may incorrectly be allowed to store and serve private data</a></li> <li><a class="reference internal" href="#malformed-redirect-urls-from-user-input-not-correctly-validated">Malformed redirect URLs from user input not correctly validated</a></li> </ul> </li> </ul> <h3>Browse</h3> <ul> <li>Prev: <a href="1.4.14.html">Django 1.4.14 release notes</a></li> <li>Next: <a href="1.4.12.html">Django 1.4.12 release notes</a></li> </ul> <h3>You are here:</h3> <ul> <li> <a href="../index.html">Django 1.5.9 documentation</a> <ul><li><a href="index.html">Release notes</a> <ul><li>Django 1.4.13 release notes</li></ul> </li></ul> </li> </ul> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../_sources/releases/1.4.13.txt" rel="nofollow">Show Source</a></li> </ul> <div id="searchbox" style="display: none"> <h3>Quick search</h3> <form class="search" action="../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <h3>Last update:</h3> <p class="topless">Aug 21, 2014</p> </div> </div> <div id="ft"> <div class="nav"> « <a href="1.4.14.html" title="Django 1.4.14 release notes">previous</a> | <a href="index.html" title="Release notes" accesskey="U">up</a> | <a href="1.4.12.html" title="Django 1.4.12 release notes">next</a> »</div> </div> </div> <div class="clearer"></div> </div> </body> </html>