CVE-2018-7537

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. 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.

How to fix CVE-2018-7537

To remediate CVE-2018-7537, upgrade the affected package to a fixed version below.

• —upgrade to 1.11.11-r0 or later
• —upgrade to 1.11.11-r0 or later
• —upgrade to 1:1.11.11-1 or later
• —upgrade to 2.0.3 or later
• —upgrade to 1.8.19 or later

Is CVE-2018-7537 being exploited?

Low — EPSS is 3.2%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

• from 0, < 1.11.11-r0
• from 0, < 1.11.11-r0
• from 0, < 1:1.11.11-1
• >= 2.0, < 2.0.3
• >= 1.8, < 1.8.19, >= 1.11, < 1.11.11, >= 2.0, < 2.0.3

CVSS scores

References (18)

• ADVISORYgithub.com/advisories/GHSA-2f9x-5v75-3qv4
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2018-7537
• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2018-7537
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2018-7537
• ADVISORY