CVE-2020-26299

Katalog CVE

CVSS 9.6 · Critical EPSS 1,9%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada ftp-srv project ftp-srv. Skor CVSS 3.1 9.6 (Critical) menurut NVD.

Deskripsi (NVD)

ftp-srv is an open-source FTP server designed to be simple yet configurable. In ftp-srv before version 4.4.0 there is a path-traversal vulnerability. Clients of FTP servers utilizing ftp-srv hosted on Windows machines can escape the FTP user's defined root folder using the expected FTP commands, for example, CWD and UPDR. When windows separators exist within the path (`\`), `path.resolve` leaves the upper pointers intact and allows the user to move beyond the root folder defined for that user. We did not take that into account when creating the path resolve function. The issue is patched in version 4.4.0 (commit 457b859450a37cba10ff3c431eb4aa67771122e3).

Rincian

Terbit di NVD

10 Februari 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

9.6 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

EPSS (30 hari)

1,9% peluang dieksploitasi; lebih tinggi dari 78,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/autovance/ftp-srv/commit/457b859450a37cba10ff3c431eb4aa67771122e3 patch · advisory pihak ketiga
• https://github.com/autovance/ftp-srv/issues/167 exploit · patch · advisory pihak ketiga
• https://github.com/autovance/ftp-srv/pull/224 patch · advisory pihak ketiga
• https://github.com/autovance/ftp-srv/issues/225 exploit · advisory pihak ketiga
• https://github.com/autovance/ftp-srv/security/advisories/GHSA-pmw4-jgxx-pcq9 exploit · advisory pihak ketiga
• https://www.npmjs.com/package/ftp-srv product · advisory pihak ketiga