gFTP: Directory traversal vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200502-27 / gFTP
Release Date	February 19, 2005
Latest Revision	February 19, 2005: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-ftp/gftp	< 2.0.18-r1	>= 2.0.18-r1	All supported architectures

Related bugreports: #81994

Synopsis

gFTP is vulnerable to directory traversal attacks, possibly leading to the creation or overwriting of arbitrary files.

2. Impact Information

Background

gFTP is a GNOME based, multi-threaded file transfer client.

Description

gFTP lacks input validation of filenames received by remote servers.

Impact

An attacker could entice a user to connect to a malicious FTP server and conduct a directory traversal attack by making use of specially crafted filenames. This could lead to arbitrary files being created or overwritten.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All gFTP users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-ftp/gftp-2.0.18-r1"

4. References

Updated February 19, 2005

Summary: This is a Gentoo Linux Security Advisory

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