CVE-2020-26299

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 v3.0 9.6 CRITICAL
CVSS v2.0 5.5 MEDIUM

9.6^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

5.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:N

Exploitability : 8.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/autovance/ftp-srv/security/advisories/GHSA-pmw4-jgxx-pcq9	Exploit Third Party Advisory
https://github.com/autovance/ftp-srv/commit/457b859450a37cba10ff3c431eb4aa67771122e3	Patch Third Party Advisory
https://www.npmjs.com/package/ftp-srv	Product Third Party Advisory
https://github.com/autovance/ftp-srv/issues/167	Exploit Patch Third Party Advisory
https://github.com/autovance/ftp-srv/issues/225	Exploit Third Party Advisory
https://github.com/autovance/ftp-srv/pull/224	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:ftp-srv_project:ftp-srv:*:*:*:*:*:node.js:*:*

Information

Published : 2021-02-10 10:15

Updated : 2021-02-19 09:27

NVD link : CVE-2020-26299

Mitre link : CVE-2020-26299

JSON object : View

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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Products Affected

ftp-srv_project

ftp-srv

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