CVE-2018-7537

moderate-risk
Published 2018-03-09

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.

Do I need to act?

~
2.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (7)

Affected Vendors

Debian Canonical Djangoproject

References (14)

Third Party Advisory http://www.securityfocus.com/bid/103357
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2927
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0265
Mailing List https://lists.debian.org/debian-lts-announce/2018/03/msg00006.html
Third Party Advisory https://usn.ubuntu.com/3591-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4161
Release Notes https://www.djangoproject.com/weblog/2018/mar/06/security-releases/
Third Party Advisory http://www.securityfocus.com/bid/103357
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2927
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0265
Mailing List https://lists.debian.org/debian-lts-announce/2018/03/msg00006.html
Third Party Advisory https://usn.ubuntu.com/3591-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4161
Release Notes https://www.djangoproject.com/weblog/2018/mar/06/security-releases/
40
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 5/34 · Minimal
Exposure 14/34 · Moderate