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CVE Record

CVE-2017-14730: The init script in the Gentoo app-admin/logstash-bin package before 5.5.3 and 5.6.x before 5.6.1 has "chown...

The init script in the Gentoo app-admin/logstash-bin package before 5.5.3 and 5.6.x before 5.6.1 has "chown -R" calls for user-writable directory trees, which allows local users to gain privileges by leveraging access to a $LS_USER account for creation of a hard link.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a Gentoo packaging flaw for Logstash. Its startup script recursively changed ownership of directories that the Logstash service user could write to. A local user who can act as that account could use hard links to influence privileged ownership changes. It is not described as a remote compromise.

Executive priority

Treat this as a targeted local privilege-escalation risk on Gentoo Logstash hosts, not a broad internet-exposed emergency. Prioritize patching where Logstash runs on shared systems or where service-account access is possible.

Technical view

Gentoo app-admin/logstash-bin before 5.5.3 and 5.6.x before 5.6.1 used unsafe chown -R operations over user-writable directory trees in its init script. The reported attack path involves hard-link creation from the $LS_USER context, creating a local privilege-escalation condition.

Likely exposure

Exposure appears limited to Gentoo systems running app-admin/logstash-bin in the vulnerable version ranges. The supplied record does not identify upstream Logstash, other Linux distributions, or non-Gentoo packages as affected.

Exploitation context

The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires local conditions: access to the $LS_USER account and the ability to create hard links in affected writable trees.

Researcher notes

The public record provides the vulnerable package, fixed version boundaries, and root cause, but no CVSS, CWE, or verified exploit-in-the-wild evidence. Analysis should stay scoped to Gentoo app-admin/logstash-bin unless additional vendor evidence is found.

Mitigation direction

  • Upgrade Gentoo app-admin/logstash-bin to 5.5.3, 5.6.1, or later applicable Gentoo package versions.
  • Review Gentoo bug 628558 and linked commits for vendor-specific remediation details.
  • Restrict interactive or delegated access to the Logstash service account.
  • Check vendor guidance before applying manual init-script changes.

Validation and detection

  • Inventory Gentoo hosts for installed app-admin/logstash-bin package versions.
  • Confirm whether versions are before 5.5.3 or 5.6.x before 5.6.1.
  • Inspect local service-account access paths for $LS_USER.
  • Review change records for the linked Gentoo commits or package updates.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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