The utils.html.strip_tags function in Django 1.6.x before 1.6.11, 1.7.x before 1.7.7, and 1.8.x before 1.8c1, when using certain versions of Python, allows remote attackers to cause a denial of service (infinite loop) by increasing the length of the input string.

update to 1.8 final modernize spec for python3

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

python-django was updated to 1.6.11 to fix security issues and non-security bugs.

THe following vulnerabilities were fixed :

  - Made is_safe_url() reject URLs that start with control     characters to mitigate possible XSS attack via     user-supplied redirect URLs (bnc#923176, CVE-2015-2317)

  - Fixed an infinite loop possibility in strip_tags()     (bnc#923172, CVE-2015-2316)

  - WSGI header spoofing via underscore/dash conflation     (bnc#913053, CVE-2015-0219)

  - Mitigated possible XSS attack via user-supplied redirect     URLs

  - Denial-of-service attack against     ``django.views.static.serve`` (bnc#913056,     CVE-2015-0221)

  - Database denial-of-service with     ``ModelMultipleChoiceField`` (bnc#913055, CVE-2015-0222)

The update also contains fixes for non-security bugs, functional and stability issues.

Updated python-django packages fix security vulnerabilities :

Jedediah Smith discovered that Django incorrectly handled underscores in WSGI headers. A remote attacker could possibly use this issue to spoof headers in certain environments (CVE-2015-0219).

Mikko Ohtamaa discovered that Django incorrectly handled user-supplied redirect URLs. A remote attacker could possibly use this issue to perform a cross-site scripting attack (CVE-2015-0220).

Alex Gaynor discovered that Django incorrectly handled reading files in django.views.static.serve(). A remote attacker could possibly use this issue to cause Django to consume resources, resulting in a denial of service (CVE-2015-0221).

Keryn Knight discovered that Django incorrectly handled forms with ModelMultipleChoiceField. A remote attacker could possibly use this issue to cause a large number of SQL queries, resulting in a database denial of service. Note that this issue only affected python-django (CVE-2015-0222).

Cross-site scripting (XSS) vulnerability in the contents function in admin/helpers.py in Django before 1.7.6 and 1.8 before 1.8b2 allows remote attackers to inject arbitrary web script or HTML via a model attribute in ModelAdmin.readonly_fields, as demonstrated by a \@property (CVE-2015-2241).

The utils.html.strip_tags function in Django 1.6.x before 1.6.11, 1.7.x before 1.7.7, and 1.8.x before 1.8c1, when using certain versions of Python, allows remote attackers to cause a denial of service (infinite loop) by increasing the length of the input string (CVE-2015-2316).

The utils.http.is_safe_url function in Django before 1.4.20, 1.5.x, 1.6.x before 1.6.11, 1.7.x before 1.7.7, and 1.8.x before 1.8c1 does not properly validate URLs, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a control character in a URL, as demonstrated by a \x08javascript: URL (CVE-2015-2317).

The Django project reports :

In accordance with our security release policy, the Django team is issuing multiple releases -- Django 1.4.20, 1.6.11, 1.7.7 and 1.8c1.
These releases are now available on PyPI and our download page. These releases address several security issues detailed below. We encourage all users of Django to upgrade as soon as possible. The Django master branch has also been updated.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2539-1 advisory.

    Andrey Babak discovered that Django incorrectly handled strip_tags. A remote attacker could possibly use     this issue to cause Django to enter an infinite loop, resulting in a denial of service. This issue only     affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-2316)

    Daniel Chatfield discovered that Django incorrectly handled user-supplied redirect URLs. A remote attacker     could possibly use this issue to perform a cross-site scripting attack. (CVE-2015-2317)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

ID	Name	Product	Family	Severity
82967	Fedora 22 : python-django-1.8-1.fc22 (2015-5766)	Nessus	Fedora Local Security Checks	medium
82515	openSUSE Security Update : python-Django (openSUSE-2015-281)	Nessus	SuSE Local Security Checks	medium
82362	Mandriva Linux Security Advisory : python-django (MDVSA-2015:109)	Nessus	Mandriva Local Security Checks	medium
82286	FreeBSD : django -- multiple vulnerabilities (62287f51-d43d-11e4-879c-00e0814cab4e)	Nessus	FreeBSD Local Security Checks	medium
82023	Ubuntu 14.04 LTS : Django vulnerabilities (USN-2539-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

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CVE-2015-2316

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