UBUNTU-CVE-2018-7537

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UBUNTU-CVE-2018-7537

Summary:

Details: An issue was discovered in Django 2.0 before 2.0.3, 1.11 before 1.11.11, and 1.8 before 1.8.19. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.

References: https://ubuntu.com/security/CVE-2018-7537, https://www.djangoproject.com/weblog/2018/mar/06/security-releases/, https://ubuntu.com/security/notices/USN-3591-1, https://www.cve.org/CVERecord?id=CVE-2018-7537