Sssd
CVE-2018-16883
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK
2 techniques across 2 tactics: Collection, Discovery The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A local attacker with access to the system could access sensitive data that should not be disclosed. |
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Alert meAnalysisAI
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. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Minimize information in error messages, implement proper access controls, encrypt sensitive data at rest and in transit.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Exposure of Sensitive Information (CWE-200), which allows attackers to access sensitive data that should not be disclosed. 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 include: Fedoraproject Sssd. Version information: before 2.0.0.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)NVD
A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cach
Access-control bypass in SSSD lets an already-authenticated user from a trusted identity domain reach hosts and services
The UNIX pipe which sudo uses to contact SSSD and read the available sudo rules from SSSD has too wide permissions, whic
Memory leak in the Privilege Attribute Certificate (PAC) responder plugin (sssd_pac_plugin.so) in System Security Servic
Access control bypass in SSSD when configured with non-default ordering that evaluates password-expiration warnings befo
Memory exhaustion in the SSSD (System Security Services Daemon) can be triggered by an unauthenticated local attacker wh
Denial of service in sssd passkey authentication handling allows any local user to crash the PAM responder by sending a
Local unprivileged users on hosts running the System Security Services Daemon (SSSD) can crash or destabilize the NSS re
A local denial-of-service flaw in SSSD (System Security Services Daemon) lets an attacker who can connect to the PAM res
A local denial of service in SSSD's Name Service Switch (NSS) responder lets an attacker who can reach the responder's U
Unprivileged local users can exhaust memory in the SSSD NSS responder by repeatedly requesting lookups for nonexistent e
Denial of service in SSSD's autofs responder allows a local attacker with an existing account on the host to crash the r
GitHub PoC
Exploit-DB