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    CVE-2009-1138

    The LDAP service in Active Directory on Microsoft Windows 2000 SP4 does not properly free memory for LDAP and LDAPS requests, which allows remote attackers to execute arbitrary code via a request that uses hexadecimal encoding, whose associated memory is not released, related to a "DN AttributeValue," aka "Active Directory Invalid Free Vulnerability." NOTE: this issue is probably a memory leak.

    Published:Jun 10, 2009
    Last Modified:Apr 23, 2026
    EPS:Jun 10, 2009
    EPSS Score:0.58555
    CVSS Score:10

    Affected Products

    Vendor
    Microsoft
    Product
    Windows 2000

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=804
    http://osvdb.org/54937
    http://secunia.com/advisories/35355
    http://support.avaya.com/elmodocs2/security/ASA-2009-214.htm
    http://www.securityfocus.com/bid/35226
    http://www.securitytracker.com/id?1022349
    http://www.us-cert.gov/cas/techalerts/TA09-160A.html
    http://www.vupen.com/english/advisories/2009/1537
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-018
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6180
    http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=804
    http://osvdb.org/54937
    http://secunia.com/advisories/35355
    http://support.avaya.com/elmodocs2/security/ASA-2009-214.htm
    http://www.securityfocus.com/bid/35226
    http://www.securitytracker.com/id?1022349
    http://www.us-cert.gov/cas/techalerts/TA09-160A.html
    http://www.vupen.com/english/advisories/2009/1537
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-018
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6180

    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