Resource exhaustion in Django - CVE-2018-7537
Published: April 3, 2018
Vulnerability identifier: #VU11476
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-7537
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Django Software Foundation
Affected software:
Django
Django
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the django.utils.html.urlize() function due to it was extremely slow to evaluate certain inputs due to catastrophic backtracking vulnerabilities in two regular expressions. The urlize() function is used to implement the urlize and urlizetrunc template filters, which were thus vulnerable. A remote attacker can cause the service to crash.
The weakness exists in the django.utils.html.urlize() function due to it was extremely slow to evaluate certain inputs due to catastrophic backtracking vulnerabilities in two regular expressions. The urlize() function is used to implement the urlize and urlizetrunc template filters, which were thus vulnerable. A remote attacker can cause the service to crash.
How to mitigate CVE-2018-7537
Update to versions 2.0.3, 1.11.11 or 1.8.19.