Debian DLA-2042-1 : python-django security update

critical Nessus Plugin ID 132268

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Synopsis

The remote Debian host is missing a security update.

Description

It was discovered that there was a potential account hijack vulnerabilility in Django, the Python-based web development framework.

Django's password-reset form used a case-insensitive query to retrieve accounts matching the email address requesting the password reset.
Because this typically involves explicit or implicit case transformations, an attacker who knew the email address associated with a user account could craft an email address which is distinct from the address associated with that account, but which -- due to the behavior of Unicode case transformations -- ceases to be distinct after case transformation, or which will otherwise compare equal given database case-transformation or collation behavior. In such a situation, the attacker can receive a valid password-reset token for the user account.

To resolve this, two changes were made in Django :

- After retrieving a list of potentially-matching accounts from the database, Django's password reset functionality now also checks the email address for equivalence in Python, using the recommended identifier-comparison process from Unicode Technical Report 36, section 2.11.2(B)(2).

- When generating password-reset emails, Django now sends to the email address retrieved from the database, rather than the email address submitted in the password-reset request form.

For more information, please see :

https://www.djangoproject.com/weblog/2019/dec/18/security-releases/

For Debian 8 'Jessie', this issue has been fixed in python-django version 1.7.11-1+deb8u8.

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 packages.

Plugin Details

Severity: Critical

ID: 132268

File Name: debian_DLA-2042.nasl

Version: 1.8

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/19/2019

Updated: 4/3/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2019-19844

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python-django, p-cpe:/a:debian:debian_linux:python-django-common, p-cpe:/a:debian:debian_linux:python-django-doc, p-cpe:/a:debian:debian_linux:python3-django, cpe:/o:debian:debian_linux:8.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/18/2019

Vulnerability Publication Date: 12/18/2019

Reference Information

CVE: CVE-2019-19844

Detections

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