GLSA 200511-11: linux-ftpd-ssl: Remote buffer overflow

http://security.gentoo.org/

Severity:	high
Title:	linux-ftpd-ssl: Remote buffer overflow
Date:	11/13/2005
Bugs:	#111573
ID:	200511-11

Synopsis

A buffer overflow vulnerability has been found, allowing a remote attacker to execute arbitrary code with escalated privileges on the local system.

Background

linux-ftpd-ssl is the netkit FTP server with encryption support.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-ftp/netkit-ftpd	< 0.17-r3	>= 0.17-r3	All supported architectures

Description

A buffer overflow vulnerability has been found in the linux-ftpd-ssl package. A command that generates an excessively long response from the server may overrun a stack buffer.

Impact

An attacker that has permission to create directories that are accessible via the FTP server could exploit this vulnerability. Successful exploitation would execute arbitrary code on the local machine with root privileges.

Workaround

There is no known workaround at this time.

Resolution

All ftpd users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-ftp/netkit-ftpd-0.17-r3"

References

CVE-2005-3524

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200511-11.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.