CVE-2023-37474
Published: 14 July 2023
Summary
CVE-2023-37474 is a high-severity Path Traversal (CWE-22) vulnerability in 9001 Copyparty. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 0.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Copyparty, a portable file server, is affected by a path traversal vulnerability (CWE-22) in versions prior to 1.8.2. The flaw resides in the .cpr subfolder and permits an attacker to access files and directories outside the intended web document root, as reflected in its CVSS 3.1 score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
Unauthenticated remote attackers can exploit the issue over the network without user interaction to read arbitrary files on the server, achieving high-impact confidentiality exposure. No authentication or special privileges are required, making the attack surface broad for any exposed Copyparty instance.
The vulnerability was addressed in commit 043e3c7d and included in release 1.8.2; the project’s GitHub security advisory states there are no known workarounds and explicitly recommends upgrading. Public references, including PacketStorm entries and the advisory GHSA-pxfv-7rr3-2qjg, document the fix and provide the patch details.
The associated EPSS score has remained at a high peak of 0.9017 with no material rise from a lower baseline after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-0055
Vulnerability details
Copyparty is a portable file server. Versions prior to 1.8.2 are subject to a path traversal vulnerability detected in the `.cpr` subfolder. The Path Traversal attack technique allows an attacker access to files, directories, and commands that reside outside the…
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web document root directory. This issue has been addressed in commit `043e3c7d` which has been included in release 1.8.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Validates pathnames and filenames to prevent traversal outside intended directories.