CVE-2017-18188

MEDIUMNVD 5.5

5.5

OpenRC opentmpfiles through 0.1.3, when the fs.protected_hardlinks sysctl is turned off, allows local users to obtain ownership of arbitrary files by creating a hard link inside a directory on which "chown -R" will be run.

CVSS v3: 5.5
EG Score: —
EPSS: 14.4%
KEV: Not listed

Published

February 14, 2018

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://github.com/OpenRC/opentmpfiles/issues/3
af854a3a-2127-422b-91ae-364da2661108https://github.com/OpenRC/opentmpfiles/issues/3

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-59Improper Link Resolution Before File Access (Link Following)

Data Freshness Timeline

(refreshed 6× in last 7d / 6× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2017-18188?

CVE-2017-18188 is a medium vulnerability published on February 14, 2018. OpenRC opentmpfiles through 0.1.3, when the fs.protected_hardlinks sysctl is turned off, allows local users to obtain ownership of arbitrary files by creating a hard link inside a directory on which "chown -R" will be run.

When was CVE-2017-18188 disclosed?

CVE-2017-18188 was first published in the National Vulnerability Database on February 14, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2017-18188 actively exploited?

CVE-2017-18188 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2017-18188?

CVE-2017-18188 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2017-18188?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-18188, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2017-18188

Explore →

Is Your Infrastructure Affected by CVE-2017-18188?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2017-18188

📅 Published

🔄 Last Modified

🔗 References (2)