CVE-2018-7536 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Reference

http://www.securityfocus.com/bid/103361 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://lists.debian.org/debian-lts-announce/2018/03/msg00006.html https://usn.ubuntu.com/3591-1/ https://www.debian.org/security/2018/dsa-4161 https://www.djangoproject.com/weblog/2018/mar/06/security-releases/ 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.

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

5.3