GoogleOSV:GHSA-2F9X-5V75-3QV4Django Denial-of-service possibility in truncatechars_html and truncatewords_html template filters
0.01 Low
EPSS
Percentile
83.3%
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
www.securityfocus.com/bid/103357
access.redhat.com/errata/RHSA-2018:2927
access.redhat.com/errata/RHSA-2019:0265
github.com/advisories/GHSA-2f9x-5v75-3qv4
github.com/django/django
github.com/django/django/commit/94c5da1d17a6b0d378866c66b605102c19f7988c
github.com/django/django/commit/a91436360b79a6ff995c3e5018bcc666dfaf1539
github.com/django/django/commit/d17974a287a6ea2e361daff88fcc004cbd6835fa
lists.debian.org/debian-lts-announce/2018/03/msg00006.html
nvd.nist.gov/vuln/detail/CVE-2018-7537
usn.ubuntu.com/3591-1
www.debian.org/security/2018/dsa-4161
www.djangoproject.com/weblog/2018/mar/06/security-releases
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