CVE intelligence and bounded remediation

CVE-2022-3939 — A vulnerability, which was classified as critical, has been found in lanyulei ferry

Critical CVSS 9.8

A vulnerability, which was classified as critical, has been found in lanyulei ferry. Affected by this issue is some unknown functionality of the file apis/public/file.go of the component API. The manipulation of the argument file leads to path traversal. The attack may be launched remotely. VDB-213446 is the identifier assigned to this vulnerability.

Severity
Critical
CVSS
9.8 (3.1)
Published
2022-11-11
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-22

Affected products

  • ferry_project / ferry

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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