sssd: Information leak in infopipe due to an improper uid restriction
Published Dec 19, 2018
5.5
MEDIUMCVSS 3.0
EPSS 0.38%
Description
sssd versions from 1.13.0 to before 2.0.0 did not properly restrict access to the infopipe according to the "allowed_uids" configuration parameter. If sensitive information were stored in the user directory, this could be inadvertently disclosed to local attackers.
Affected products
- Vendor n/a Product Sssd Defaultn/a
- Version 2.0.0StatusaffectedConstraints-
- Version
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 |
|
- ≥ 1.13.0 · < 2.0.0
No data.
Red Hat Enterprise Linux 5
sssd
Not affected
Red Hat Enterprise Linux 6
sssd
Will not fix
Red Hat Enterprise Linux 7
sssd
Fix deferred
Red Hat Enterprise Linux 8
sssd
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | sssd | Not affected | n/a |
| Red Hat Enterprise Linux 6 | sssd | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | sssd | Fix deferred | n/a |
| Red Hat Enterprise Linux 8 | sssd | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
The information exposed by this vulnerability is typically not highly sensitive. By default, it is only those fields returned by getpwent() and getgrent().
Red Hat mitigation
This vulnerability is only exposed if the infopipe service is enabled (enabled by default in Red Hat Enterprise Linux 7, disabled by default in Red Hat Enterprise Linux 6), and `[ifp].allowed_uids` is relied upon to protect sensitive information in the user directory.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
AV:L/AC:L/Au:N/C:P/I:N/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
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.38% (0.00382) | 29.77th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.38% (0.00382) | 32.09th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.33% (0.00332) | 3.01th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.33% (0.00332) | 0.00th | v1 |
References (6)
- http://www.securityfocus.com/bid/106264 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-16883 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1659862 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16883 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-16883
- https://www.cve.org/CVERecord?id=CVE-2018-16883
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/106264 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-16883 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1659862 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16883 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-16883 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-16883 |
Change history (0)
No recorded changes yet.