Django 1.10 before 1.10.7, 1.9 before 1.9.13, and 1.8 before 1.8.18 relies on user input in some cases to redirect the user to an "on success" URL. The security check for these redirects (namely ``django.utils.http.is_safe_url()``) considered some numeric URLs "safe" when they shouldn't be, aka an open redirect vulnerability. Also, if a developer relies on ``is_safe_url()`` to provide safe redirect targets and puts such a URL into a link, they could suffer from an XSS attack.

An update is now available for Red Hat Satellite 6.4 for RHEL 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Red Hat Satellite is a systems management tool for Linux-based infrastructure. It allows for provisioning, remote management, and monitoring of multiple Linux deployments with a single centralized tool.

Security Fix(es) :

* jackson-databind: Unsafe deserialization due to incomplete black list (incomplete fix for CVE-2017-7525) (CVE-2017-15095)

* hornetq: XXE/SSRF in XPath selector (CVE-2015-3208)

* bouncycastle: Information disclosure in GCMBlockCipher (CVE-2015-6644)

* bouncycastle: DSA does not fully validate ASN.1 encoding during signature verification allowing for injection of unsigned data (CVE-2016-1000338)

* bouncycastle: Information leak in AESFastEngine class (CVE-2016-1000339)

* bouncycastle: Information exposure in DSA signature generation via timing attack (CVE-2016-1000341)

* bouncycastle: ECDSA improper validation of ASN.1 encoding of signature (CVE-2016-1000342)

* bouncycastle: DHIES implementation allowed the use of ECB mode (CVE-2016-1000344)

* bouncycastle: DHIES/ECIES CBC modes are vulnerable to padding oracle attack (CVE-2016-1000345)

* bouncycastle: Other party DH public keys are not fully validated (CVE-2016-1000346)

* bouncycastle: ECIES implementation allowed the use of ECB mode (CVE-2016-1000352)

* logback: Serialization vulnerability in SocketServer and ServerSocketReceiver (CVE-2017-5929)

* python-django: Open redirect and possible XSS attack via user-supplied numeric redirect URLs (CVE-2017-7233)

* hibernate-validator: Privilege escalation when running under the security manager (CVE-2017-7536)

* puppet: Environment leakage in puppet-agent (CVE-2017-10690)

* Satellite 6: XSS in discovery rule filter autocomplete functionality (CVE-2017-12175)

* foreman: Stored XSS in fact name or value (CVE-2017-15100)

* pulp: sensitive credentials revealed through the API (CVE-2018-1090)

* foreman: SQL injection due to improper handling of the widget id parameter (CVE-2018-1096)

* foreman: Ovirt admin password exposed by foreman API (CVE-2018-1097)

* django: Catastrophic backtracking in regular expressions via 'urlize' and 'urlizetrunc' (CVE-2018-7536)

* django: Catastrophic backtracking in regular expressions via 'truncatechars_html' and 'truncatewords_html' (CVE-2018-7537)

* guava: Unbounded memory allocation in AtomicDoubleArray and CompoundOrdering classes allow remote attackers to cause a denial of service (CVE-2018-10237)

* bouncycastle: Carry propagation bug in math.raw.Nat??? class (CVE-2016-1000340)

* bouncycastle: DSA key pair generator generates a weak private key by default (CVE-2016-1000343)

* puppet: Unpacking of tarballs in tar/mini.rb can create files with insecure permissions (CVE-2017-10689)

* bouncycastle: BKS-V1 keystore files vulnerable to trivial hash collisions (CVE-2018-5382)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank Liao Xinxi (NSFOCUS) for reporting CVE-2017-15095; and the Django project for reporting CVE-2017-7233, CVE-2018-7536, and CVE-2018-7537. The CVE-2017-7536 issue was discovered by Gunnar Morling (Red Hat); and the CVE-2018-1096 issue was discovered by Martin Povolny (Red Hat). Red Hat would also like to thank David Jorm (IIX Product Security) for reporting CVE-2015-3208.

Additional Changes :

This update also fixes several bugs and adds various enhancements.
Documentation for these changes is available from the Release Notes document linked to in the References section.

This update for python3-Django to version 1.18.18 fixes multiple issues. Security issues fixed :

  - CVE-2018-7537: Fixed catastrophic backtracking in     django.utils.text.Truncator. (bsc#1083305)

  - CVE-2018-7536: Fixed catastrophic backtracking in urlize     and urlizetrunc template filters (bsc#1083304).

  - CVE-2016-7401: CSRF protection bypass on a site with     Google Analytics (bsc#1001374).

  - CVE-2016-2513: User enumeration through timing     difference on password hasher work factor upgrade     (bsc#968000).

  - CVE-2016-2512: Fixed malicious redirect and possible XSS     attack via user-supplied redirect URLs containing basic     auth (bsc#967999).

  - CVE-2016-9013: User with hardcoded password created when     running tests on Oracle (bsc#1008050).

  - CVE-2016-9014: DNS rebinding vulnerability when     DEBUG=True (bsc#1008047).

  - CVE-2017-7234: Open redirect vulnerability in     django.views.static.serve() (bsc#1031451).

  - CVE-2017-7233: Open redirect and possible XSS attack via     user-supplied numeric redirect URLs (bsc#1031450).

  - CVE-2017-12794: Fixed XSS possibility in traceback     section of technical 500 debug page (bsc#1056284)

This update for python-Django to version 1.18.18 fixes multiple issues. Security issues fixed :

  - CVE-2018-7537: Fixed catastrophic backtracking in     django.utils.text.Truncator. (bsc#1083305)

  - CVE-2018-7536: Fixed catastrophic backtracking in urlize     and urlizetrunc template filters (bsc#1083304).

  - CVE-2016-7401: CSRF protection bypass on a site with     Google Analytics (bsc#1001374).

  - CVE-2016-2513: User enumeration through timing     difference on password hasher work factor upgrade     (bsc#968000).

  - CVE-2016-2512: Fixed malicious redirect and possible XSS     attack via user-supplied redirect URLs containing basic     auth (bsc#967999).

  - CVE-2016-9013: User with hardcoded password created when     running tests on Oracle (bsc#1008050).

  - CVE-2016-9014: DNS rebinding vulnerability when     DEBUG=True (bsc#1008047).

  - CVE-2017-7234: Open redirect vulnerability in     django.views.static.serve() (bsc#1031451).

  - CVE-2017-7233: Open redirect and possible XSS attack via     user-supplied numeric redirect URLs (bsc#1031450).

  - CVE-2017-12794: Fixed XSS possibility in traceback     section of technical 500 debug page (bsc#1056284)

fix CVE-2017-7233

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.

Several vulnerabilities were discovered in Django, a high-level Python web development framework. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2016-9013     Marti Raudsepp reported that a user with a hard-coded     password is created when running tests with an Oracle     database.

  - CVE-2016-9014     Aymeric Augustin discovered that Django does not     properly validate the Host header against     settings.ALLOWED_HOSTS when the debug setting is     enabled. A remote attacker can take advantage of this     flaw to perform DNS rebinding attacks.

  - CVE-2017-7233     It was discovered that is_safe_url() does not properly     handle certain numeric URLs as safe. A remote attacker     can take advantage of this flaw to perform XSS attacks     or to use a Django server as an open redirect.

  - CVE-2017-7234     Phithon from Chaitin Tech discovered an open redirect     vulnerability in the django.views.static.serve() view.
    Note that this view is not intended for production use.

update to 1.9.13, fix for CVE-2017-7233

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.

It was discovered that there were two vulnerabilities in python-django, a high-level Python web development framework.

CVE-2017-7233 (#859515): Open redirect and possible XSS attack via user-supplied numeric redirect URLs. Django relies on user input in some cases (e.g. django.contrib.auth.views.login() and i18n) to redirect the user to an 'on success' URL. The security check for these redirects (namely is_safe_url()) considered some numeric URLs (e.g.
http:999999999) 'safe' when they shouldn't be. Also, if a developer relied on is_safe_url() to provide safe redirect targets and puts such a URL into a link, they could suffer from an XSS attack.

CVE-2017-7234 (#895516): Open redirect vulnerability in django.views.static.serve; A maliciously crafted URL to a Django site using the serve() view could redirect to any other domain. The view no longer does any redirects as they don't provide any known, useful functionality.

For Debian 7 'Wheezy', this issue has been fixed in python-django version 1.4.22-1+deb7u3.

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.

It was discovered that Django incorrectly handled numeric redirect URLs. A remote attacker could possibly use this issue to perform XSS attacks, and to use a Django server as an open redirect.
(CVE-2017-7233)

Phithon Gong discovered that Django incorrectly handled certain URLs when the jango.views.static.serve() view is being used. A remote attacker could possibly use a Django server as an open redirect.
(CVE-2017-7234).

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.

Django team reports :

These release addresses two security issues detailed below. We encourage all users of Django to upgrade as soon as possible.

- Open redirect and possible XSS attack via user-supplied numeric redirect URLs

- Open redirect vulnerability in django.views.static.serve()

ID	Name	Product	Family	Severity
118185	RHEL 7 : Satellite Server (RHSA-2018:2927)	Nessus	Red Hat Local Security Checks	critical
108641	openSUSE Security Update : python3-Django (openSUSE-2018-318)	Nessus	SuSE Local Security Checks	critical
108640	openSUSE Security Update : python-Django (openSUSE-2018-317)	Nessus	SuSE Local Security Checks	critical
101750	Fedora 26 : python-django (2017-f997e46fa7)	Nessus	Fedora Local Security Checks	medium
99695	Debian DSA-3835-1 : python-django - security update	Nessus	Debian Local Security Checks	critical
99613	Fedora 25 : python-django (2017-c0ef6054d7)	Nessus	Fedora Local Security Checks	medium
99202	Debian DLA-885-1 : python-django security update	Nessus	Debian Local Security Checks	medium
99195	Ubuntu 14.04 LTS / 16.04 LTS : Django vulnerabilities (USN-3254-1)	Nessus	Ubuntu Local Security Checks	medium
99193	FreeBSD : django -- multiple vulnerabilities (dc880d6c-195d-11e7-8c63-0800277dcc69)	Nessus	FreeBSD Local Security Checks	medium

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CVE-2017-7233

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medium

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medium