The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4390 advisory.

  - Django: Incorrect HTTP detection with reverse-proxy connecting via HTTPS (CVE-2019-12781)

  - Django: backtracking in a regular expression in django.utils.text.Truncator leads to DoS (CVE-2019-14232)

  - Django: the behavior of the underlying HTMLParser leading to DoS (CVE-2019-14233)

  - Django: SQL injection possibility in key and index lookups for JSONField/HStoreField (CVE-2019-14234)

  - Django: Potential memory exhaustion in django.utils.encoding.uri_to_iri() (CVE-2019-14235)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It was discovered that Django incorrectly handled the Truncator function. A remote attacker could possibly use this issue to cause Django to consume resources, leading to a denial of service.
(CVE-2019-14232)

It was discovered that Django incorrectly handled the strip_tags function. A remote attacker could possibly use this issue to cause Django to consume resources, leading to a denial of service.
(CVE-2019-14233)

It was discovered that Django incorrectly handled certain lookups in the PostgreSQL support. A remote attacker could possibly use this issue to perform SQL injection attacks. (CVE-2019-14234)

It was discovered that Django incorrectly handled certain invalid UTF-8 octet sequences. A remote attacker could possibly use this issue to cause Django to consume resources, leading to a denial of service.
(CVE-2019-14235).

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

This update for python-Django fixes the following issues :

Security issues fixed :

&#9; - CVE-2019-11358: Fixed prototype pollution.

  - CVE-2019-12308: Fixed XSS in AdminURLFieldWidget     (bsc#1136468)

  - CVE-2019-12781: Fixed incorrect HTTP detection with     reverse-proxy connecting via HTTPS (bsc#1139945).

  - CVE-2019-14232: Fixed denial-of-service possibility in     ``django.utils.text.Truncator`` (bsc#1142880).

  - CVE-2019-14233: Fixed denial-of-service possibility in     ``strip_tags()`` (bsc#1142882).

  - CVE-2019-14234: Fixed SQL injection possibility in key     and index lookups for ``JSONField``/``HStoreField``     (bsc#1142883).

  - CVE-2019-14235: Fixed potential memory exhaustion in     ``django.utils.encoding.uri_to_iri()`` (bsc#1142885).

Non-security issues fixed :

  - Fixed a migration crash on PostgreSQL when adding a     check constraint with a contains lookup on     DateRangeField or DateTimeRangeField, if the right hand     side of an expression is the same type.

fixes for CVE-2019-14232 to 14235

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-202004-17 (Django: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Django. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker, by sending specially crafted input, could possibly       cause a Denial of Service condition, or alter the database.
  Workaround :

    There is no known workaround at this time.

Django release notes :

CVE-2019-14232: Denial-of-service possibility in django.utils.text.Truncator

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 regular expressions used by Truncator have been simplified in order to avoid potential backtracking issues. As a consequence, trailing punctuation may now at times be included in the truncated output.

CVE-2019-14233: Denial-of-service possibility in strip_tags()

Due to the behavior of the underlying HTMLParser, django.utils.html.strip_tags() would be extremely slow to evaluate certain inputs containing large sequences of nested incomplete HTML entities. The strip_tags() method is used to implement the corresponding striptags template filter, which was thus also vulnerable.

strip_tags() now avoids recursive calls to HTMLParser when progress removing tags, but necessarily incomplete HTML entities, stops being made.

Remember that absolutely NO guarantee is provided about the results of strip_tags() being HTML safe. So NEVER mark safe the result of a strip_tags() call without escaping it first, for example with django.utils.html.escape().

CVE-2019-14234: SQL injection possibility in key and index lookups for JSONField/HStoreField

Key and index lookups for JSONField and key lookups for HStoreField were subject to SQL injection, using a suitably crafted dictionary, with dictionary expansion, as the **kwargs passed to QuerySet.filter().

CVE-2019-14235: Potential memory exhaustion in django.utils.encoding.uri_to_iri()

If passed certain inputs, django.utils.encoding.uri_to_iri() could lead to significant memory usage due to excessive recursion when re-percent-encoding invalid UTF-8 octet sequences.

uri_to_iri() now avoids recursion when re-percent-encoding invalid UTF-8 octet sequences.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:1324 advisory.

  - Django: Incorrect HTTP detection with reverse-proxy connecting via HTTPS (CVE-2019-12781)

  - Django: backtracking in a regular expression in django.utils.text.Truncator leads to DoS (CVE-2019-14232)

  - Django: the behavior of the underlying HTMLParser leading to DoS (CVE-2019-14233)

  - Django: SQL injection possibility in key and index lookups for JSONField/HStoreField (CVE-2019-14234)

  - Django: Potential memory exhaustion in django.utils.encoding.uri_to_iri() (CVE-2019-14235)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Several vulnerabilities were discovered in python-django, a web development framework. They could lead to remote denial-of-service or SQL injection,

ID	Name	Product	Family	Published	Updated	Severity
142030	RHEL 7 : python-django (RHSA-2020:4390)	Nessus	Red Hat Local Security Checks	10/29/2020	4/28/2024	critical
127801	Ubuntu 16.04 LTS / 18.04 LTS : Django vulnerabilities (USN-4084-1)	Nessus	Ubuntu Local Security Checks	8/12/2019	10/21/2023	critical
127742	openSUSE Security Update : python-Django (openSUSE-2019-1839)	Nessus	SuSE Local Security Checks	8/12/2019	5/6/2024	critical
127936	Fedora 30 : python-django (2019-647f74ce51)	Nessus	Fedora Local Security Checks	8/20/2019	5/2/2024	critical
136216	GLSA-202004-17 : Django: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	5/1/2020	3/14/2024	critical
127547	FreeBSD : Django -- multiple vulnerabilities (6e65dfea-b614-11e9-a3a2-1506e15611cc)	Nessus	FreeBSD Local Security Checks	8/12/2019	5/7/2024	critical
170305	RHEL 8 : python-django (RHSA-2020:1324)	Nessus	Red Hat Local Security Checks	1/23/2023	5/25/2023	critical
127822	Debian DSA-4498-1 : python-django - security update	Nessus	Debian Local Security Checks	8/13/2019	5/3/2024	critical

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