sssd, versions 1.13.0 to before 2.0.0, did not properly restrict access to the infopipe according to the "allowed_uids" configuration parameter. Sensitive information could be inadvertently disclosed to local attackers if it was stored in the user directory.
Find out more about CVE-2018-16883 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 2.5 |
|---|---|
| CVSS3 Base Metrics | 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 | Low |
| Integrity Impact | None |
| Availability Impact | None |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | sssd | Affected |
| Red Hat Enterprise Linux 6 | sssd | Will not fix |
| Red Hat Enterprise Linux 5 | sssd | Not affected |
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.
Vulmon