Quantum Secular Labs / Blog / Advisories

CVE-2001-0053: David Madore Ftpd Bsd: Privilege escalation

CVE-2001-0053 has a CVSS v2 base score of 10.0 (the maximum on that scale) and NVD lists 3 affected products, including David Madore Ftpd Bsd. Per its scoring, it can be exploited over the network, without authentication. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

One-byte buffer overflow in replydirname function in BSD-based ftpd allows remote attackers to gain root privileges.

Severity breakdown

CVSS v2.0 10.0: AV:N/AC:L/Au:N/C:C/I:C/A:C

• Access vector: Network. Exploitable remotely over the network.
• Access complexity: Low. No special conditions are required.
• Authentication: None. No authentication is needed.
• Confidentiality impact: Complete. Total information disclosure.
• Integrity impact: Complete. Total loss of integrity.
• Availability impact: Complete. Total shutdown of the component.

Affected products

• David Madore Ftpd Bsd: 0.2.3
• Netbsd: 1.4; 1.4.1; 1.4.2; 1.5
• Openbsd: 2.4; 2.5; 2.6; 2.7; 2.8

References

• http://archives.neohapsis.com/archives/bugtraq/2000-12/0275.html
• http://www.openbsd.org/advisories/ftpd_replydirname.txt
• http://www.securityfocus.com/bid/2124
• https://exchange.xforce.ibmcloud.com/vulnerabilities/5776