Buffer overflow in uftpd - CVE-2020-5204
Published: January 20, 2020
Vulnerability identifier: #VU24401
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-5204
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Joachim Nilsson
Affected software:
uftpd
uftpd
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in "handle_PORT" in "ftpcmd.c" file when a buffer that is 16 bytes large being filled via "sprintf()" with user input based on the format specifier string %d.%d.%d.%d. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2020-5204
Install updates from vendor's website.