Path Traversal in Troglobit Uftpd
CVE-2020-20277
There are multiple unauthenticated directory traversal vulnerabilities in different FTP commands in uftpd FTP server versions 2.7 to 2.10 due to improper implementation of a chroot jail in common.c's compose_abspath function that can be abused to read or write to arbitrary files on the filesystem, leak process memory, or potentially lead to remote code execution.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.252 (97.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Troglobit Uftpd
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-20277?
- CVE-2020-20277 is a critical-severity vulnerability in Troglobit Uftpd, classified under Path Traversal. CVSS score: 9.8/10. Published 2020-12-18.
- How severe is CVE-2020-20277?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-20277 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.