ProFTPD: Local privilege escalation

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200702-02 / proftpd
Release Date	February 13, 2007
Latest Revision	February 13, 2007: 01
Impact	high
Exploitable	local

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-ftp/proftpd	< 1.3.1_rc1	>= 1.3.1_rc1	All supported architectures

Related bugreports: #158122

Synopsis

A flaw in ProFTPD may allow a local attacker to obtain root privileges.

2. Impact Information

Background

ProFTPD is a powerful, configurable, and free FTP daemon.

Description

A flaw exists in the mod_ctrls module of ProFTPD, normally used to allow FTP server administrators to configure the daemon at runtime.

Impact

An FTP server administrator permitted to interact with mod_ctrls could potentially compromise the ProFTPD process and execute arbitrary code with the privileges of the FTP Daemon, which is normally the root user.

3. Resolution Information

Workaround

Disable mod_ctrls, or ensure only trusted users can access this feature.

Resolution

All ProFTPD users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-ftp/proftpd-1.3.1_rc1"

4. References

CVE-2006-6563

Page updated February 13, 2007

Summary: This is a Gentoo Linux Security Advisory

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