Incorrect Regular Expression

Affecting python-django package, versions <1.8.7-1ubuntu5.6

Report new vulnerabilities
Do your applications use this vulnerable package? Test your applications

NVD Description

Note: Versions mentioned in the description apply to the upstream python-django package. See Remediation section below for Ubuntu:16.04 relevant versions.

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.

Remediation

Upgrade Ubuntu:16.04 python-django to version 1.8.7-1ubuntu5.6 or higher.

References

CVSS Score

5.3
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    Low
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVE
CVE-2018-7537
CWE
CWE-185
Snyk ID
SNYK-UBUNTU1604-PYTHONDJANGO-360923
Disclosed
09 Mar, 2018
Published
09 Mar, 2018