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CVE-2018-16883

20
FAUCET Score

CVE-2018-16883 affects SSSD versions 1.13.0 through 1.16.x, where the infopipe access control (allowed_uids) was improperly enforced. This flaw could lead to the inadvertent disclosure of sensitive user directory information to local attackers. With a CVSS score of 5.5 (Medium), it requires local access and low privileges to exploit, potentially resulting in high confidentiality impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.13.0, < 2.0.0CPE matchmatch criteria
cpe:2.3:a:fedoraproject:sssd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

2.5LOW

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.0
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 86th percentile among its peer group of 15,932 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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

Vendor Patches (2)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: sssd
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: sssd

Vendor Advisories (1)

redhatCVE-2018-16883Low

sssd: Information leak in infopipe due to an improper uid restriction

Dec 19, 2018

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
securityfocus.com / bid/106264
Third Party AdvisoryVDB Entry