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<h1><a href="../index.html">Django 1.8.19 documentation</a></h1>
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<span id="django-1-4-8-release-notes"></span><h1>Django 1.4.8 release notes<a class="headerlink" href="#django-1-4-8-release-notes" title="Permalink to this headline">¶</a></h1>
<p><em>September 14, 2013</em></p>
<p>Django 1.4.8 fixes two security issues present in previous Django releases in
the 1.4 series.</p>
<div class="section" id="s-denial-of-service-via-password-hashers">
<span id="denial-of-service-via-password-hashers"></span><h2>Denial-of-service via password hashers<a class="headerlink" href="#denial-of-service-via-password-hashers" title="Permalink to this headline">¶</a></h2>
<p>In previous versions of Django, no limit was imposed on the plaintext
length of a password. This allowed a denial-of-service attack through
submission of bogus but extremely large passwords, tying up server
resources performing the (expensive, and increasingly expensive with
the length of the password) calculation of the corresponding hash.</p>
<p>As of 1.4.8, Django’s authentication framework imposes a 4096-byte
limit on passwords and will fail authentication with any submitted
password of greater length.</p>
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<div class="section" id="s-corrected-usage-of-sensitive-post-parameters-in-django-contrib-auths-admin">
<span id="corrected-usage-of-sensitive-post-parameters-in-django-contrib-auths-admin"></span><h2>Corrected usage of <a class="reference internal" href="../howto/error-reporting.html#django.views.decorators.debug.sensitive_post_parameters" title="django.views.decorators.debug.sensitive_post_parameters"><code class="xref py py-func docutils literal"><span class="pre">sensitive_post_parameters()</span></code></a> in <a class="reference internal" href="../topics/auth/index.html#module-django.contrib.auth" title="django.contrib.auth: Django's authentication framework."><code class="xref py py-mod docutils literal"><span class="pre">django.contrib.auth</span></code></a>’s admin<a class="headerlink" href="#corrected-usage-of-sensitive-post-parameters-in-django-contrib-auths-admin" title="Permalink to this headline">¶</a></h2>
<p>The decoration of the <code class="docutils literal"><span class="pre">add_view</span></code> and <code class="docutils literal"><span class="pre">user_change_password</span></code> user admin
views with <a class="reference internal" href="../howto/error-reporting.html#django.views.decorators.debug.sensitive_post_parameters" title="django.views.decorators.debug.sensitive_post_parameters"><code class="xref py py-func docutils literal"><span class="pre">sensitive_post_parameters()</span></code></a>
did not include <a class="reference internal" href="../ref/utils.html#django.utils.decorators.method_decorator" title="django.utils.decorators.method_decorator"><code class="xref py py-func docutils literal"><span class="pre">method_decorator()</span></code></a> (required
since the views are methods) resulting in the decorator not being properly
applied. This usage has been fixed and
<a class="reference internal" href="../howto/error-reporting.html#django.views.decorators.debug.sensitive_post_parameters" title="django.views.decorators.debug.sensitive_post_parameters"><code class="xref py py-func docutils literal"><span class="pre">sensitive_post_parameters()</span></code></a> will now
throw an exception if it’s improperly used.</p>
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<ul>
<li><a class="reference internal" href="#">Django 1.4.8 release notes</a><ul>
<li><a class="reference internal" href="#denial-of-service-via-password-hashers">Denial-of-service via password hashers</a></li>
<li><a class="reference internal" href="#corrected-usage-of-sensitive-post-parameters-in-django-contrib-auths-admin">Corrected usage of <code class="docutils literal"><span class="pre">sensitive_post_parameters()</span></code> in <code class="docutils literal"><span class="pre">django.contrib.auth</span></code>’s admin</a></li>
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