sssd: improper implementation of GPOs due to too restrictive permissions
Published Mar 25, 2019
5.4
MEDIUMCVSS 3.0
EPSS 1.15%
Description
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.
Affected products
- Vendor n/a Product Sssd Defaultn/a
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| n/a | Sssd | n/a |
|
Configuration 1
- n/a
Configuration 2
- 7.0
No data.
Red Hat Enterprise Linux 7
sssd-0:1.16.4-21.el7
Fixed · RHSA-2019:2177
Red Hat Enterprise Linux 8
sssd-0:2.2.0-19.el8
Fixed · RHSA-2019:3651
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
imgbased-0:1.1.9-0.1.el7ev
Fixed · RHSA-2019:2437
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
ovirt-node-ng-0:4.3.5-0.20190717.0.el7ev
Fixed · RHSA-2019:2437
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
redhat-release-virtualization-host-0:4.3.5-2.el7ev
Fixed · RHSA-2019:2437
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
redhat-virtualization-host-0:4.3.5-20190722.0.el7_7
Fixed · RHSA-2019:2437
Red Hat Enterprise Linux 5
sssd
Not affected
Red Hat Enterprise Linux 6
sssd
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | sssd-0:1.16.4-21.el7 | Fixed | RHSA-2019:2177 |
| Red Hat Enterprise Linux 8 | sssd-0:2.2.0-19.el8 | Fixed | RHSA-2019:3651 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | imgbased-0:1.1.9-0.1.el7ev | Fixed | RHSA-2019:2437 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | ovirt-node-ng-0:4.3.5-0.20190717.0.el7ev | Fixed | RHSA-2019:2437 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | redhat-release-virtualization-host-0:4.3.5-2.el7ev | Fixed | RHSA-2019:2437 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | redhat-virtualization-host-0:4.3.5-20190722.0.el7_7 | Fixed | RHSA-2019:2437 |
| Red Hat Enterprise Linux 5 | sssd | Not affected | n/a |
| Red Hat Enterprise Linux 6 | sssd | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
AV:N/AC:L/Au:S/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.15% (0.01147) | 65.59th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.12% (0.01122) | 61.87th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.94% (0.00941) | 74.66th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.13% (0.00125) | 48.75th | v3 (v2023.03.01) |
| Mar 18, 2024 | 0.13% (0.00125) | 45.99th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.14% (0.00143) | 49.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00127) | 45.57th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.45% (0.01454) | 32.67th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.45% (0.01454) | 0.00th | v1 |
References (11)
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00042.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00051.html vendor-advisoryx_refsource_SUSE
- https://access.redhat.com/errata/RHSA-2019:2177 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:2437 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:3651 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2018-16838 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1640820 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16838 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/05/msg00028.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-16838
- https://www.cve.org/CVERecord?id=CVE-2018-16838
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00042.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00051.html | vendor-advisoryx_refsource_SUSE | |
| https://access.redhat.com/errata/RHSA-2019:2177 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2019:2437 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2019:3651 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2018-16838 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1640820 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16838 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2023/05/msg00028.html | ||
| https://nvd.nist.gov/vuln/detail/CVE-2018-16838 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-16838 |
Change history (0)
No recorded changes yet.