CVE-2009-2958

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    CVE-2009-2958

    Published: 2 Sept 2009Last Modified: 10 Apr 2026

    Summary:

    Details: The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a malformed blksize option.

    References: http://secunia.com/advisories/36563, http://www.ubuntu.com/usn/USN-827-1, https://rhn.redhat.com/errata/RHSA-2010-0095.html, https://bugzilla.redhat.com/show_bug.cgi?id=519020, http://www.coresecurity.com/content/dnsmasq-vulnerabilities, http://www.redhat.com/support/errata/RHSA-2009-1238.html, http://www.securityfocus.com/bid/36120, http://www.thekelleys.org.uk/dnsmasq/CHANGELOG, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9816

    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