CVE intelligence and bounded remediation

CVE-2023-27105 — Shanling Eddict Player security vulnerability

Critical CVSS 9.8

A vulnerability in the Wi-Fi file transfer module of Shanling M5S Portable Music Player with Shanling MTouch OS v4.3 and Shanling M2X Portable Music Player with Shanling MTouch OS v3.3 allows attackers to arbitrarily read, delete, or modify any critical system files via directory traversal.

Severity
Critical
CVSS
9.8 (3.1)
Published
2023-04-25
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-22

Affected products

  • shanling / eddict_player / 2.1.3
  • shanling / mtouch_os / 3.3

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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