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CVE-2019-3811

20
FAUCET Score

CVE-2019-3811 describes a vulnerability in SSSD where, if a user lacked a defined home directory, SSSD would incorrectly return the root directory ('/') instead of an empty string. This flaw affects various Linux distributions including Debian, Fedora, OpenSUSE, and Red Hat, specifically SSSD versions prior to 2.1. The vulnerability has a CVSS score of 5.2 (Medium), indicating an adjacent network attack vector with low complexity, requiring user interaction, and potentially leading to a high impact on availability by allowing services to incorrectly chroot users to the root directory. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.1CPE matchmatch criteria
cpe:2.3:a:fedoraproject:sssd:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:-:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
42.3CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.1MEDIUM

CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 92nd percentile among its peer group of 60 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.0 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: sssd-0:1.16.4-21.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: sssd

Vendor Advisories (1)

redhatCVE-2019-3811Moderate

sssd: fallback_homedir returns '/' for empty home directories in passwd file

Dec 4, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-03/msg00026.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-04/msg00045.html
Mailing ListThird Party Advisory
access.redhat.com / errata/RHSA-2019:2177
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchVendor Advisory
lists.debian.org / debian-lts-announce/2019/01/msg00011.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2023/05/msg00028.html
securityfocus.com / bid/106644
Broken Link