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    CVE-2021-3671

    A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.

    Published:Aug 31, 2021
    Last Modified:Nov 21, 2024
    EPS:Oct 12, 2021
    EPSS Score:0.0148
    CVSS Score:6.5

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Netapp
    Product
    Management Services For Element Software
    Vendor
    Netapp
    Product
    Management Services For Netapp Hci
    Vendor
    Netapp
    Product
    Ontap Select Deploy Administration Utility
    Vendor
    Samba
    Product
    Samba

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C
    https://bugzilla.samba.org/show_bug.cgi?id=14770%2C
    https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a
    https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html
    https://security.netapp.com/advisory/ntap-20221215-0002/
    https://security.netapp.com/advisory/ntap-20230216-0008/
    https://www.debian.org/security/2022/dsa-5287
    https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C
    https://bugzilla.samba.org/show_bug.cgi?id=14770%2C
    https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a
    https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html
    https://security.netapp.com/advisory/ntap-20221215-0002/
    https://security.netapp.com/advisory/ntap-20230216-0008/
    https://www.debian.org/security/2022/dsa-5287

    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