PT-2020-18317 · Uftpd · Uftpd

Aaron Esau · Published 2020-01-22 · Updated 2020-01-30 · CVE-2020-5221

Positive Technologies (AI Summary)

CVSS v3.1

7.2

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions uftpd versions prior to 2.11

Description The issue allows an unauthenticated user to perform a directory traversal attack using multiple different FTP commands, enabling them to read and write to arbitrary locations on the filesystem. This is due to the lack of a well-written chroot jail in the compose abspath() function.

Recommendations For versions prior to 2.11, update to version 2.11 to resolve the issue. As a temporary workaround, consider restricting access to the FTP server until the update can be applied.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2020-5221

GHSA-WMX8-V7MX-6X9H

Affected Products

Uftpd

References · 5

• 🔥 https://github.com/troglobit/uftpd/security/advisories/GHSA-wmx8-v7mx-6x9h · Exploit
• https://github.com/troglobit/uftpd/commit/455b47d3756aed162d2d0ef7f40b549f3b5b30fe · Patch
• https://osv.dev/vulnerability/CVE-2020-5221 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-5221 · Security Note
• https://t.me/cvenotify/387 · Telegram Post