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    CVE-2009-2958

    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.

    Published:Aug 31, 2009
    Last Modified:Apr 23, 2026
    EPS:Sep 2, 2009
    EPSS Score:0.01131
    CVSS Score:4.3

    Affected Products

    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Thekelleys
    Product
    Dnsmasq

    Exploits

    https://www.exploit-db.com/exploits/9617

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://secunia.com/advisories/36563
    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
    http://www.ubuntu.com/usn/USN-827-1
    https://bugzilla.redhat.com/show_bug.cgi?id=519020
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9816
    https://rhn.redhat.com/errata/RHSA-2010-0095.html
    http://secunia.com/advisories/36563
    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
    http://www.ubuntu.com/usn/USN-827-1
    https://bugzilla.redhat.com/show_bug.cgi?id=519020
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9816
    https://rhn.redhat.com/errata/RHSA-2010-0095.html

    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