Learn about CVE-2020-5204, a buffer overflow vulnerability in uftpd before 2.11. Discover impact, affected systems, exploitation, and mitigation steps to secure your systems.
In uftpd before 2.11, a buffer overflow vulnerability exists in handle_PORT in ftpcmd.c due to a buffer being filled with user input using the format specifier %d. This vulnerability has been assigned CVE-2020-5204.
Understanding CVE-2020-5204
This CVE pertains to a buffer overflow vulnerability in the uftpd software.
What is CVE-2020-5204?
The vulnerability in uftpd before version 2.11 allows for a buffer overflow in the handle_PORT function, potentially leading to security issues.
The Impact of CVE-2020-5204
The CVSS v3.1 base score for this vulnerability is 6.5, indicating a medium severity issue with low impact on confidentiality, integrity, and availability.
Technical Details of CVE-2020-5204
This section covers the technical aspects of the CVE.
Vulnerability Description
The buffer overflow vulnerability in uftpd before 2.11 is caused by user input exceeding the buffer size allocated for IPv4 addresses.
Affected Systems and Versions
Exploitation Mechanism
The vulnerability arises from the use of the %d format specifier allowing more than 3 digits, leading to a buffer overflow.
Mitigation and Prevention
Protecting systems from the CVE-2020-5204 vulnerability is crucial.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates