CVE-2009-4565

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    CVE-2009-4565

    Published: 4 Jan 2010Last Modified: 10 Apr 2026

    Summary:

    Details: sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

    References: http://secunia.com/advisories/37998, http://secunia.com/advisories/38314, http://secunia.com/advisories/38915, http://secunia.com/advisories/39088, http://secunia.com/advisories/40109, http://secunia.com/advisories/43366, http://security.gentoo.org/glsa/glsa-201206-30.xml, http://www.debian.org/security/2010/dsa-1985, http://www.vupen.com/english/advisories/2009/3661, http://www.vupen.com/english/advisories/2010/0719, http://www.vupen.com/english/advisories/2010/1386, http://www.vupen.com/english/advisories/2011/0415, http://www.sendmail.org/releases/8.14.4, http://www.vupen.com/english/advisories/2009/3661, http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00004.html, http://marc.info/?l=bugtraq&m=126953289726317&w=2, http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021797.1-1, http://www.redhat.com/support/errata/RHSA-2011-0262.html, http://www.securityfocus.com/bid/37543, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10255, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11822

    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