CVE-2018-7536
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.
02 / AFFECTED SOFTWARE
Affected packages
43 explicit affected versions
33 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
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.
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.
05 / REFERENCES
Further evidence
- https://access.redhat.com/errata/RHSA-2018:2927
- https://access.redhat.com/errata/RHSA-2019:0051
- https://access.redhat.com/errata/RHSA-2019:0082
- https://access.redhat.com/errata/RHSA-2019:0265
- https://github.com/advisories/GHSA-r28v-mw67-m5p9
- https://github.com/django/django
- https://github.com/django/django/commit/1ca63a66ef3163149ad822701273e8a1844192c2
- https://github.com/django/django/commit/abf89d729f210c692a50e0ad3f75fb6bec6fae16
- https://github.com/django/django/commit/e157315da3ae7005fa0683ffc9751dbeca7306c8
- https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2018-5.yaml
- https://lists.debian.org/debian-lts-announce/2018/03/msg00006.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-7536
- https://usn.ubuntu.com/3591-1
- https://web.archive.org/web/20200227131019/http://www.securityfocus.com/bid/103361
- https://www.debian.org/security/2018/dsa-4161
- https://www.djangoproject.com/weblog/2018/mar/06/security-releases
- http://www.securityfocus.com/bid/103361
- https://usn.ubuntu.com/3591-1/
- https://www.djangoproject.com/weblog/2018/mar/06/security-releases/