CVE-2012-4520: Input Validation
First published: Wed Oct 10 2012(Updated: )
It was reported that Django's built-in parsing of the Host header was incorrectly handling username/password information (in django.http.HttpRequest.get_host()). This could allow a remote attacker to cause parts of Django, in particular the password-reset mechanism, to generate and display arbitrary URLs to end-users. Acknowledgements: Red Hat would like to thank the upstream Django project for reporting this vulnerability.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/django | >=1.4<1.4.2 | 1.4.2 |
| pip/django | >=1.3<1.3.4 | 1.3.4 |
| Djangoproject Django | =1.3 | |
| Djangoproject Django | =1.3-alpha1 | |
| Djangoproject Django | =1.3-beta1 | |
| Djangoproject Django | =1.3.1 | |
| Djangoproject Django | =1.3.2 | |
| Djangoproject Django | =1.3.3 | |
| Djangoproject Django | =1.4 | |
| Djangoproject Django | =1.4.1 | |
| redhat/Django | <1.3.4 | 1.3.4 |
| redhat/Django | <1.4.2 | 1.4.2 |
| debian/python-django | 2:2.2.28-1~deb11u2 3:3.2.19-1+deb12u1 3:4.2.16-1 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2012-4520
- https://github.com/django/django/commit/92d3430f12171f16f566c9050c40feefb830a4a3
- https://github.com/django/django/commit/9305c0e12d43c4df999c3301a1f0c742264a657e
- https://github.com/django/django/commit/b45c377f8f488955e0c7069cad3f3dd21910b071
- https://bugzilla.redhat.com/show_bug.cgi?id=865164
- https://www.djangoproject.com/weblog/2012/oct/17/security/
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=691145
- https://lists.fedoraproject.org/pipermail/package-announce/2012-October/090666.html
- https://lists.fedoraproject.org/pipermail/package-announce/2012-October/090904.html
- https://lists.fedoraproject.org/pipermail/package-announce/2012-October/090970.html
- https://ubuntu.com/usn/usn-1632-1
- https://ubuntu.com/usn/usn-1757-1
- https://web.archive.org/web/20140417023920/http://securitytracker.com/id?1027708
- https://www.debian.org/security/2013/dsa-2634
- https://www.openwall.com/lists/oss-security/2012/10/30/4
- https://github.com/advisories/GHSA-2655-q453-22f9 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2012-4520
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=691145
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090666.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090904.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090970.html
- http://secunia.com/advisories/51033
- http://secunia.com/advisories/51314
- http://securitytracker.com/id?1027708
- http://ubuntu.com/usn/usn-1632-1
- http://ubuntu.com/usn/usn-1757-1
- http://www.debian.org/security/2013/dsa-2634
- http://www.openwall.com/lists/oss-security/2012/10/30/4
- http://www.osvdb.org/86493
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=625210&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=625210&action=edit
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=625211&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=625211&action=edit
- https://access.redhat.com/security/cve/CVE-2012-4520
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=867732
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=867733
- https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2012-7.yaml
- https://www.djangoproject.com/weblog/2012/oct/17/security
- http://people.debian.org/~hertzog/packages/python-django_1.2.3-3+squeeze4_amd64.changes
- http://debian-handbook.info/get/
Frequently Asked Questions
What is the severity of CVE-2012-4520?
CVE-2012-4520 is classified as a medium-severity vulnerability in Django.
How can I fix CVE-2012-4520?
To fix CVE-2012-4520, upgrade Django to version 1.4.2 or 1.3.4 or later.
Which versions of Django are affected by CVE-2012-4520?
Django versions 1.3 to 1.4.1 and earlier versions of 1.3 are affected by CVE-2012-4520.
What type of attack does CVE-2012-4520 enable?
CVE-2012-4520 allows remote attackers to exploit the incorrect handling of the Host header, potentially affecting authentication mechanisms.
Are there any specific components of Django vulnerable due to CVE-2012-4520?
Yes, particularly the password-reset mechanism in Django is vulnerable due to CVE-2012-4520.
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