Debian DLA-1303-1 : python-django security update

medium Nessus Plugin ID 107242

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Synopsis

The remote Debian host is missing a security update.

Description

Several functions were extremely slow to evaluate certain inputs due to catastrophic backtracking vulnerabilities in several regular expressions.

CVE-2018-7536

The django.utils.html.urlize() function 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.

The problematic regular expressions are replaced with parsing logic that behaves similarly.

CVE-2018-7537

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.

The backtracking problem in the regular expression is fixed.

For Debian 7 'Wheezy', these problems have been fixed in version 1.4.22-1+deb7u4.

We recommend that you upgrade your python-django packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected python-django, and python-django-doc packages.

Plugin Details

Severity: Medium

ID: 107242

File Name: debian_DLA-1303.nasl

Version: 1.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 3/9/2018

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python-django, p-cpe:/a:debian:debian_linux:python-django-doc, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 3/8/2018

Reference Information

CVE: CVE-2018-7536, CVE-2018-7537

Detections

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