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    CVE-2007-3843

    The Linux kernel before 2.6.23-rc1 checks the wrong global variable for the CIFS sec mount option, which might allow remote attackers to spoof CIFS network traffic that the client configured for security signatures, as demonstrated by lack of signing despite sec=ntlmv2i in a SetupAndX request.

    Published:Jun 8, 2007
    Last Modified:Apr 23, 2026
    EPS:Aug 9, 2007
    EPSS Score:0.01904
    CVSS Score:4.3

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux

    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://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595
    http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1
    http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html
    http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html
    http://secunia.com/advisories/26366
    http://secunia.com/advisories/26647
    http://secunia.com/advisories/26760
    http://secunia.com/advisories/27436
    http://secunia.com/advisories/27747
    http://secunia.com/advisories/27912
    http://secunia.com/advisories/28806
    http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
    http://www.debian.org/security/2007/dsa-1363
    http://www.redhat.com/support/errata/RHSA-2007-0705.html
    http://www.redhat.com/support/errata/RHSA-2007-0939.html
    http://www.securityfocus.com/bid/25244
    http://www.ubuntu.com/usn/usn-510-1
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9670
    http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595
    http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1
    http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html
    http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html
    http://secunia.com/advisories/26366
    http://secunia.com/advisories/26647
    http://secunia.com/advisories/26760
    http://secunia.com/advisories/27436
    http://secunia.com/advisories/27747
    http://secunia.com/advisories/27912
    http://secunia.com/advisories/28806
    http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
    http://www.debian.org/security/2007/dsa-1363
    http://www.redhat.com/support/errata/RHSA-2007-0705.html
    http://www.redhat.com/support/errata/RHSA-2007-0939.html
    http://www.securityfocus.com/bid/25244
    http://www.ubuntu.com/usn/usn-510-1
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9670

    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