CVE-2009-4212

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    CVE-2009-4212

    Published: 13 Jan 2010Last Modified: 10 Apr 2026

    Summary:

    Details: Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 (aka krb5) 1.3 through 1.6.3, and 1.7 before 1.7.1, allow remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by providing ciphertext with a length that is too short to be valid.

    References: http://secunia.com/advisories/38080, http://secunia.com/advisories/38108, http://secunia.com/advisories/38126, http://secunia.com/advisories/38140, http://secunia.com/advisories/38184, http://secunia.com/advisories/38203, http://secunia.com/advisories/38696, http://secunia.com/advisories/40220, http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-004.txt, http://www.debian.org/security/2010/dsa-1969, http://www.mandriva.com/security/advisories?name=MDVSA-2010:006, http://www.vupen.com/english/advisories/2010/0096, http://www.vupen.com/english/advisories/2010/0129, http://www.vupen.com/english/advisories/2010/1481, https://rhn.redhat.com/errata/RHSA-2010-0029.html, https://rhn.redhat.com/errata/RHSA-2010-0095.html, http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-004.txt, https://bugzilla.redhat.com/show_bug.cgi?id=545015, http://lists.apple.com/archives/security-announce/2010//Jun/msg00001.html, http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033915.html, http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033919.html, http://marc.info/?l=bugtraq&m=130497213107107&w=2, http://sunsolve.sun.com/search/document.do?assetkey=1-66-275530-1, http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021779.1-1, http://support.apple.com/kb/HT4188, http://support.avaya.com/css/P8/documents/100074869, http://ubuntu.com/usn/usn-881-1, http://www.securityfocus.com/bid/37749, http://www.securitytracker.com/id?1023440, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11272, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7357, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8192

    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