UBUNTU-CVE-2018-7537

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Source
https://ubuntu.com/security/CVE-2018-7537
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-7537.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-7537
Upstream
Downstream
Related
Published
2018-03-06T14:00:00Z
Modified
2025-09-08T16:44:47Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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 truncatecharshtml and truncatewordshtml template filters, which were thus vulnerable.

References

Affected packages

Ubuntu:14.04:LTS / python-django

Package

Name
python-django
Purl
pkg:deb/ubuntu/python-django@1.6.11-0ubuntu1.2?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.11-0ubuntu1.2

Affected versions

1.*

1.5.4-1ubuntu1
1.6-1
1.6.1-1
1.6.1-2
1.6.1-2ubuntu0.1
1.6.1-2ubuntu0.2
1.6.1-2ubuntu0.3
1.6.1-2ubuntu0.4
1.6.1-2ubuntu0.5
1.6.1-2ubuntu0.6
1.6.1-2ubuntu0.8
1.6.1-2ubuntu0.9
1.6.1-2ubuntu0.10
1.6.1-2ubuntu0.11
1.6.1-2ubuntu0.12
1.6.1-2ubuntu0.13
1.6.1-2ubuntu0.14
1.6.1-2ubuntu0.15
1.6.1-2ubuntu0.16
1.6.11-0ubuntu1
1.6.11-0ubuntu1.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.6.11-0ubuntu1.2",
            "binary_name": "python-django"
        }
    ]
}

Ubuntu:16.04:LTS / python-django

Package

Name
python-django
Purl
pkg:deb/ubuntu/python-django@1.8.7-1ubuntu5.6?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.7-1ubuntu5.6

Affected versions

1.*

1.7.9-1ubuntu5
1.8.5-2ubuntu1
1.8.7-1ubuntu1
1.8.7-1ubuntu2
1.8.7-1ubuntu3
1.8.7-1ubuntu4
1.8.7-1ubuntu5
1.8.7-1ubuntu5.1
1.8.7-1ubuntu5.2
1.8.7-1ubuntu5.4
1.8.7-1ubuntu5.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.8.7-1ubuntu5.6",
            "binary_name": "python-django"
        },
        {
            "binary_version": "1.8.7-1ubuntu5.6",
            "binary_name": "python-django-common"
        },
        {
            "binary_version": "1.8.7-1ubuntu5.6",
            "binary_name": "python3-django"
        }
    ]
}