CVE-2018-7536

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. The django.utils.html.urlize() function was extremely slow to evaluate certain inputs due to catastrophic backtracking vulnerabilities in two regular expressions (only one regular expression for Django 1.8.x). The urlize() function is used to implement the urlize and urlizetrunc template filters, which were thus vulnerable.

Do I need to act?

~
1.4% 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 (9)

Affected Vendors

Debian Redhat Canonical Djangoproject

References (24)

Third Party Advisory http://www.securityfocus.com/bid/103361
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2927
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0051
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0082
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0265
https://github.com/django/django/commit/1ca63a66ef3163149ad822701273e8a1844192c2
https://github.com/django/django/commit/abf89d729f210c692a50e0ad3f75fb6bec6fae16
https://github.com/django/django/commit/e157315da3ae7005fa0683ffc9751dbeca7306c8
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/103361
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2927
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0051
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0082
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0265
https://github.com/django/django/commit/1ca63a66ef3163149ad822701273e8a1844192c2
https://github.com/django/django/commit/abf89d729f210c692a50e0ad3f75fb6bec6fae16
https://github.com/django/django/commit/e157315da3ae7005fa0683ffc9751dbeca7306c8
and 4 more references
40
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 4/34 · Minimal
Exposure 15/34 · Moderate