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31 lines
1.4 KiB
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31 lines
1.4 KiB
Plaintext
===========================
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Django 1.8.19 release notes
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===========================
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*March 6, 2018*
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Django 1.8.19 fixes two security issues in 1.18.18.
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CVE-2018-7536: Denial-of-service possibility in ``urlize`` and ``urlizetrunc`` template filters
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===============================================================================================
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The ``django.utils.html.urlize()`` function was extremely slow to evaluate
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certain inputs due to a catastrophic backtracking vulnerability in a regular
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expression. The ``urlize()`` function is used to implement the ``urlize`` and
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``urlizetrunc`` template filters, which were thus vulnerable.
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The problematic regular expression is replaced with parsing logic that behaves
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similarly.
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CVE-2018-7537: Denial-of-service possibility in ``truncatechars_html`` and ``truncatewords_html`` template filters
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==================================================================================================================
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If ``django.utils.text.Truncator``'s ``chars()`` and ``words()`` methods were
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passed the ``html=True`` argument, they were extremely slow to evaluate certain
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inputs due to a catastrophic backtracking vulnerability in a regular
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expression. The ``chars()`` and ``words()`` methods are used to implement the
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``truncatechars_html`` and ``truncatewords_html`` template filters, which were
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thus vulnerable.
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The backtracking problem in the regular expression is fixed.
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