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    CVE-2018-16838

    A flaw was found in sssd Group Policy Objects implementation. When the GPO is not readable by SSSD due to a too strict permission settings on the server side, SSSD will allow all authenticated users to login instead of denying access.

    Published:Feb 4, 2019
    Last Modified:Feb 13, 2025
    EPS:Mar 25, 2019
    EPSS Score:0.01226
    CVSS Score:5.4

    Affected Products

    Vendor
    Fedoraproject
    Product
    Sssd
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-68744 (CVSS 3.3) — A flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply…
    CVE-2026-68742 (CVSS 5.5) — A flaw was found in SSSD. The sss_nss_protocol_parse_addr() function in the NSS responder does not validate th…
    CVE-2026-68743 (CVSS 5.5) — A flaw was found in SSSD. The extract_authtok_v1() function in the PAM responder does not validate the auth_to…
    CVE-2026-6245 (CVSS 5.5) — A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function wit…
    CVE-2023-3758 (CVSS 7.1) — A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated use…
    CVE-2022-4254 (CVSS 8.8) — sssd: libsss_certmap fails to sanitise certificate data used in LDAP filters…
    CVE-2021-3621 (CVSS 8.8) — A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetc…
    CVE-2012-3462 (CVSS 8.8) — A flaw was found in SSSD version 1.9.0. The SSSD's access-provider logic causes the result of the HBAC rule pr…
    CVE-2018-16883 (CVSS 2.5) — sssd versions from 1.13.0 to before 2.0.0 did not properly restrict access to the infopipe according to the "a…
    CVE-2019-3811 (CVSS 5.2) — A vulnerability was found in sssd. If a user was configured with no home directory set, sssd would return '/' …

    References

    http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00042.html
    http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00051.html
    https://access.redhat.com/errata/RHSA-2019:2177
    https://access.redhat.com/errata/RHSA-2019:2437
    https://access.redhat.com/errata/RHSA-2019:3651
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16838
    https://lists.debian.org/debian-lts-announce/2023/05/msg00028.html
    http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00042.html
    http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00051.html
    https://access.redhat.com/errata/RHSA-2019:2177
    https://access.redhat.com/errata/RHSA-2019:2437
    https://access.redhat.com/errata/RHSA-2019:3651
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16838
    https://lists.debian.org/debian-lts-announce/2023/05/msg00028.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