CVE-2003-0688

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    CVE-2003-0688

    Published: 20 Oct 2003Last Modified: 10 Apr 2026

    Summary:

    Details: The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not properly initialize certain data structures, which allows remote attackers to cause a denial of service (process crash) via an invalid DNS response that causes Sendmail to free incorrect data.

    References: ftp://patches.sgi.com/support/free/security/advisories/20030803-01-P, http://www.mandriva.com/security/advisories?name=MDKSA-2003:086, http://www.novell.com/linux/security/advisories/2003_035_sendmail.html, http://www.redhat.com/support/errata/RHSA-2003-265.html, http://www.redhat.com/support/errata/RHSA-2003-265.html, http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000727, http://www.kb.cert.org/vuls/id/993452, http://www.sendmail.org/dnsmap1.html, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A597

    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