Resource management error in Django - CVE-2011-4137
Published: October 19, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44585
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-4137
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Django Software Foundation
Affected software:
Django
Django
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The verify_exists functionality in the URLField implementation in Django before 1.2.7 and 1.3.x before 1.3.1 relies on Python libraries that attempt access to an arbitrary URL with no timeout, which allows remote attackers to cause a denial of service (resource consumption) via a URL associated with (1) a slow response, (2) a completed TCP connection with no application data sent, or (3) a large amount of application data, a related issue to CVE-2011-1521.
How to mitigate CVE-2011-4137
Install update from vendor's website.
Sources
- http://openwall.com/lists/oss-security/2011/09/11/1
- http://openwall.com/lists/oss-security/2011/09/13/2
- http://openwall.com/lists/oss-security/2011/09/15/5
- http://secunia.com/advisories/46614
- http://www.debian.org/security/2011/dsa-2332
- https://bugzilla.redhat.com/show_bug.cgi?id=737366
- https://hermes.opensuse.org/messages/14700881
- https://www.djangoproject.com/weblog/2011/sep/09/
- https://www.djangoproject.com/weblog/2011/sep/10/127/