Is CVE-2017-18078 in the CISA KEV catalog?

No. CVE-2017-18078 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-18078?

CVE-2017-18078 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2017-18078?

CVE-2017-18078 has an EPSS score of 1.08% (61th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-18078?

Upgrade systemd on debian 11 to 237-1 or later.

CVE & CISA-KEV Catalog

CVE-2017-18078

HIGH

7.8

CVSS v3

NVD

Description

systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file.

CWE-59Link Following

How to fix

Remediation Available

systemdDebian

Fixed in:237-1CVE-2017-18078

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.08%probability of exploitation in 30 days

61stpercentile

Moderate risk: more likely to be exploited than 61% of all known CVEs.

References

Exploit4

Third-Party Advisory3

Other references2

Related Vulnerabilities

Other CWE-59 (Link Following) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-30333	High	7.5	99%	KEV + Ransom	Fix
CVE-2021-21300	High	8.0	89%	-	Fix
CVE-2021-32610	High	7.1	73%	-	Fix
CVE-2020-36193	High	7.5	71%	KEV	Fix
CVE-2023-40028	Medium	4.9	58%	-	Fix
CVE-2020-0787	High	7.8	43%	KEV + Ransom	-

Embed a live status badge for CVE-2017-18078

Markdown

[![CVE-2017-18078](https://tridentstack.com/cve/badge/CVE-2017-18078.svg)](https://tridentstack.com/cve/CVE-2017-18078)

HTML

<a href="https://tridentstack.com/cve/CVE-2017-18078"><img src="https://tridentstack.com/cve/badge/CVE-2017-18078.svg" alt="CVE-2017-18078"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.