5.5

CVE-2018-16838: fedoraproject sssd Improper Access Control

Modified
AliasesMGASA-2019-0395SUSE-SU-2019:1476-1SUSE-SU-2019:1477-1
Published 25-03-2019Last modified 13-02-2025

Vulnerability summary

CVE-2018-16838 is a medium (CVSS 5.5) Improper Access Control vulnerability in fedoraproject sssd. EPSS estimates a 1.15% chance of exploitation in the next 30 days, higher than 66.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.4, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v2.0 (NVD)
EPSS score
1.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 2
DLA-3436-1OPENSUSE-SU-2024:13446-1RHSA-2019:2177RHSA-2019:2437USN-5067-1

Timeline

  1. 25-03-2019
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

1.15%

Chance of exploitation in the next 30 days

Percentile

67%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat59 products
  • enterprise_linuxEOL7.0
  • libipa_hbac< 0:2.2.0-19.el8
  • libipa_hbac-debuginfo< 0:2.2.0-19.el8
  • libsss_autofs< 0:2.2.0-19.el8
  • libsss_autofs-debuginfo< 0:2.2.0-19.el8
Suse10 products
  • sssd&distro=SUSE Linux Enterprise Desktop 12 SP3< 1.13.4-34.37.1
  • sssd&distro=SUSE Linux Enterprise Desktop 12 SP4< 1.16.1-4.12.2
  • sssd&distro=SUSE Linux Enterprise Module for Basesystem 15< 1.16.1-3.24.6
  • sssd&distro=SUSE Linux Enterprise Module for Basesystem 15 SP1< 1.16.1-3.24.6
  • sssd&distro=SUSE Linux Enterprise Server 12 SP3< 1.13.4-34.37.1
Opensuse2 products
  • sssd&distro=openSUSE Leap 15.0< 1.16.1-lp151.7.3.1
  • sssd&distro=openSUSE Leap 15.1< 1.16.1-lp151.7.3.1
[unknown]1 product
Debian1 product
  • sssd< 2.2.0-1
Fedoraproject1 product
Mageia1 product
  • sssd< 1.16.3-3.1.mga7
Ubuntu1 product
  • sssdAll versions (No fix recorded) | < 1.16.1-1ubuntu1.8

8 vendors · 76 products

References

59 links
Show all 59 references