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CVE-2018-7537

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.

Impact

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.

Affected products

VendorProductAffected versions
CanonicalUbuntu Linux
Versions 14.04, 16.04, 17.10
DjangoprojectDjango
from 1.8 before 1.8.19
from 1.11 before 1.11.11
from 2.0 before 2.0.3
DebianDebian Linux
Versions 7.0, 8.0, 9.0

Weakness classification

CWE-185

References