CVE-2018-7536
MEDIUM severity · CVSS 5.3 · CWE-185
5.3CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactLow
Exploit probability (EPSS)5%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.securityfocus.com/bid/103361Advisory
- https://access.redhat.com/errata/RHSA-2018:2927Advisory
- https://access.redhat.com/errata/RHSA-2019:0051Advisory
- https://access.redhat.com/errata/RHSA-2019:0082Advisory
- https://access.redhat.com/errata/RHSA-2019:0265Advisory
- https://github.com/django/django/commit/1ca63a66ef3163149ad822701273e8a1844192c2
- https://github.com/django/django/commit/abf89d729f210c692a50e0ad3f75fb6bec6fae16
- https://github.com/django/django/commit/e157315da3ae7005fa0683ffc9751dbeca7306c8