National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2018-7537 Detail

Current 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.

Source:  MITRE
Description Last Modified:  03/09/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.3 MEDIUM
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L (V3 legend)
Impact Score: 1.4
Exploitability Score: 3.9

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Insufficient_Info
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/103357 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:2927
https://lists.debian.org/debian-lts-announce/2018/03/msg00006.html Third Party Advisory
https://usn.ubuntu.com/3591-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4161
https://www.djangoproject.com/weblog/2018/mar/06/security-releases/ Release Notes Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Incorrect Regular Expression (CWE-185)

Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-7537
NVD Published Date:
03/09/2018
NVD Last Modified:
10/17/2018