CVE-2009-2666

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    CVE-2009-2666

    Published: 7 Aug 2009Last Modified: 10 Apr 2026

    Summary:

    Details: socket.c in fetchmail before 6.3.11 does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

    References: http://secunia.com/advisories/36175, http://secunia.com/advisories/36179, http://secunia.com/advisories/36236, http://www.debian.org/security/2009/dsa-1852, http://www.mandriva.com/security/advisories?name=MDVSA-2009:201, http://www.vupen.com/english/advisories/2009/2155, http://www.vupen.com/english/advisories/2009/3184, http://fetchmail.berlios.de/fetchmail-SA-2009-01.txt, http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html, http://marc.info/?l=oss-security&m=124949601207156&w=2, http://osvdb.org/56855, http://support.apple.com/kb/HT3937, http://www.securityfocus.com/archive/1/505530/100/0/threaded, http://www.securityfocus.com/bid/35951, http://www.securitytracker.com/id?1022679, http://www.slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.543463, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11059

    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-2009-2666 | CVE-DB