SB2020010612 - Multiple vulnerabilities in uftpd daemon

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Main Vulnerability Database SB2020010612

SB2020010612 - Multiple vulnerabilities in uftpd daemon

Published: January 6, 2020 Updated: January 31, 2020

Security Bulletin ID SB2020010612
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2020-5204)

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.


2) Path traversal (CVE-ID: CVE-2020-5221)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to the lack of a well-written chroot jail in "compose_abspath()" function. A remote attacker can use multiple different FTP commands and read and write to arbitrary locations on the filesystem.


Remediation

Install update from vendor's website.

References