GLSA 200802-06 scponly: Multiple vulnerabilities
Posted on: 02/12/2008 11:15 PM

A new security update has been released for Gentoo Linux - scponly: Multiple vulnerabilities. Here the announcement:

Gentoo Linux Security Advisory GLSA 200802-06
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http://security.gentoo.org/
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Severity: Normal
Title: scponly: Multiple vulnerabilities
Date: February 12, 2008
Bugs: #201726, #203099
ID: 200802-06

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Synopsis
========

Multiple vulnerabilities in scponly allow authenticated users to bypass
security restrictions.

Background
==========

scponly is a shell for restricting user access to file transfer only
using sftp and scp.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/scponly lt; 4.8 gt;= 4.8

Description
===========

Florian Weimer from Debian discovered that scponly does not filter the
- -o and -F options to the scp executable (CVE-2007-6415). Joachim
Breitner reported that Subversion and rsync support invokes subcommands
in an insecure manner (CVE-2007-6350).

Impact
======

A local attacker could exploit these vulnerabilities to elevate
privileges and execute arbitrary commands on the vulnerable host.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All scponly users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=net-misc/scponly-4.8"

Due to the design of scponly's Subversion support, security
restrictions can still be circumvented. Please read carefully the
SECURITY file included in the package.

References
==========

[ 1 ] CVE-2007-6350
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6350
[ 2 ] CVE-2007-6415
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6415

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200802-06.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
http://bugs.gentoo.org.

License
=======

Copyright 2008 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5



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