CVE-2020-26299: fallo de gravedad media en autovance ftp-srv
File System Bounds Escape
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.3epss 1.9%
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).
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N
Productos afectados
autovance · ftp-srvCVEs relacionadas — autovance ftp-srv
En el mismo producto, de las más peligrosas a las menos.
Referencias
https://github.com/autovance/ftp-srv/commit/457b859450a37cba10ff3c431eb4aa67771122e3https://github.com/autovance/ftp-srv/issues/167https://github.com/autovance/ftp-srv/issues/225https://github.com/autovance/ftp-srv/pull/224https://github.com/autovance/ftp-srv/security/advisories/GHSA-pmw4-jgxx-pcq9https://www.npmjs.com/package/ftp-srv