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    CVE-2022-2127

    An out-of-bounds read vulnerability was found in Samba due to insufficient length checks in winbindd_pam_auth_crap.c. When performing NTLM authentication, the client replies to cryptographic challenges back to the server. These replies have variable lengths, and Winbind fails to check the lan manager response length. When Winbind is used for NTLM authentication, a maliciously crafted request can trigger an out-of-bounds read in Winbind, possibly resulting in a crash.

    Published:Jul 19, 2023
    Last Modified:Nov 20, 2025
    EPS:Jul 20, 2023
    EPSS Score:0.06217
    CVSS Score:5.9

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhev Hypervisor
    Vendor
    Redhat
    Product
    Storage
    Vendor
    Samba
    Product
    Samba

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

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    References

    https://access.redhat.com/errata/RHSA-2023:6667
    https://access.redhat.com/errata/RHSA-2023:7139
    https://access.redhat.com/errata/RHSA-2024:0423
    https://access.redhat.com/errata/RHSA-2024:0580
    https://access.redhat.com/security/cve/CVE-2022-2127
    https://bugzilla.redhat.com/show_bug.cgi?id=2222791
    https://www.samba.org/samba/security/CVE-2022-2127.html
    https://access.redhat.com/errata/RHSA-2023:6667
    https://access.redhat.com/errata/RHSA-2023:7139
    https://access.redhat.com/errata/RHSA-2024:0423
    https://access.redhat.com/errata/RHSA-2024:0580
    https://access.redhat.com/security/cve/CVE-2022-2127
    https://bugzilla.redhat.com/show_bug.cgi?id=2222791
    https://lists.debian.org/debian-lts-announce/2024/04/msg00015.html
    https://lists.fedoraproject.org/archives/list/[email protected]/message/BPCSGND7LO467AJGR5DYBGZLTCGTOBCC/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/OT74M42E6C36W7PQVY3OS4ZM7DVYB64Z/
    https://security.netapp.com/advisory/ntap-20230731-0010/
    https://www.debian.org/security/2023/dsa-5477
    https://www.samba.org/samba/security/CVE-2022-2127.html

    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