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Sicherheit: Überschreiben von Dateien in cpio
Aktuelle Meldungen Distributionen
Name: Überschreiben von Dateien in cpio
ID: 200506-16
Distribution: Gentoo
Plattformen: Keine Angabe
Datum: Mo, 20. Juni 2005, 13:00
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1111
http://www.securityfocus.com/archive/1/396429
Applikationen: GNU cpio

Originalnachricht

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Gentoo Linux Security Advisory GLSA 200506-16
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http://security.gentoo.org/
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Severity: Normal
Title: cpio: Directory traversal vulnerability
Date: June 20, 2005
Bugs: #90619
ID: 200506-16

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Synopsis
========

cpio contains a flaw which may allow a specially crafted cpio archive
to extract files to an arbitrary directory.

Background
==========

cpio is a file archival tool which can also read and write tar files.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/cpio < 2.6-r3 >= 2.6-r3

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

A vulnerability has been found in cpio that can potentially allow a
cpio archive to extract its files to an arbitrary directory of the
creator's choice.

Impact
======

An attacker could create a malicious cpio archive which would create
files in arbitrary locations on the victim's system. This issue could
also be used in conjunction with a previous race condition
vulnerability (CAN-2005-1111) to change permissions on files owned by
the victim.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All cpio users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/cpio-2.6-r3"

References
==========

[ 1 ] Original Advisory
http://www.securityfocus.com/archive/1/396429
[ 2 ] CAN-2005-1111
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1111

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

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

http://security.gentoo.org/glsa/glsa-200506-16.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 2005 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/2.0
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