CVE-2011-4137

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    CVE-2011-4137

    Published: 19 Oct 2011Last Modified: 10 Apr 2026

    Summary:

    Details: 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.

    References: http://secunia.com/advisories/46614, http://www.debian.org/security/2011/dsa-2332, https://www.djangoproject.com/weblog/2011/sep/09/, http://openwall.com/lists/oss-security/2011/09/11/1, http://openwall.com/lists/oss-security/2011/09/13/2, https://bugzilla.redhat.com/show_bug.cgi?id=737366, https://www.djangoproject.com/weblog/2011/sep/09/, https://www.djangoproject.com/weblog/2011/sep/10/127/, http://openwall.com/lists/oss-security/2011/09/15/5, https://hermes.opensuse.org/messages/14700881

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2011-4137 | CVE-DB