CVE-2018-7537
MEDIUMDjango <2.0.3, 1.11.<11, 1.8.<19 - Catastrophic Backtracking
Title source: llmDescription
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 (7)
Core 7
Core References
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3591-1/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/03/msg00006.html
Release Notes, Vendor Advisory x_refsource_confirm
https://www.djangoproject.com/weblog/2018/mar/06/security-releases/
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:2927
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/103357
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0265
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2018/dsa-4161
Scores
CVSS v3
5.3
EPSS
0.0206
EPSS Percentile
84.2%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Details
CWE
CWE-185
Status
published
Products (8)
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
17.10
debian/debian_linux
7.0
debian/debian_linux
8.0
debian/debian_linux
9.0
djangoproject/django
1.8 - 1.8.19
pypi/Django
2.0 - 2.0.3PyPI
Published
Mar 09, 2018
Tracked Since
Feb 18, 2026