CVE-2020-5221

Public Exploit
Directory Traversal (Chroot Escape) vulnerability in uftpd

Description

In uftpd before 2.11, it is possible for an unauthenticated user to perform a directory traversal attack using multiple different FTP commands and read and write to arbitrary locations on the filesystem due to the lack of a well-written chroot jail in compose_abspath(). This has been fixed in version 2.11

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.49% Top 20%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: troglobit uftpd
Published at:
Updated at:

References

Link Tags
https://github.com/troglobit/uftpd/security/advisories/GHSA-wmx8-v7mx-6x9h third party advisory exploit
https://github.com/troglobit/uftpd/commit/455b47d3756aed162d2d0ef7f40b549f3b5b30fe third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-5221?
CVE-2020-5221 has been scored as a medium severity vulnerability.
How to fix CVE-2020-5221?
To fix CVE-2020-5221, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-5221 being actively exploited in the wild?
It is possible that CVE-2020-5221 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-5221?
CVE-2020-5221 affects troglobit uftpd.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.