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GLSA 200407-07 - Shorewall : Insecure temp file handling
Posted by Philipp Esselbach on: 07/08/2004 02:49 PM [ Print | 0 comment(s) ]
A Shorewall update is available for Gentoo Linux
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Gentoo Linux Security Advisory GLSA 200407-07
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http://security.gentoo.org/
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Severity: Normal
Title: Shorewall : Insecure temp file handling
Date: July 08, 2004
Bugs: #55675
ID: 200407-07
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Synopsis
=======
Shorewall contains a bug in the code handling the creation of temporary files and directories. This can allow a non-root user to overwrite arbitrary system files.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200407-07
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: Shorewall : Insecure temp file handling
Date: July 08, 2004
Bugs: #55675
ID: 200407-07
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
=======
Shorewall contains a bug in the code handling the creation of temporary files and directories. This can allow a non-root user to overwrite arbitrary system files.
Background
=========
Shorewall is a high level tool for configuring Netfilter, the firewall facility included in the Linux Kernel.
Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-firewall/shorewall <= 1.4.10c >= 1.4.10f
Description
==========
Shorewall uses temporary files and directories in an insecure manner. A local user could create symbolic links at specific locations, eventually overwriting other files on the filesystem with the rights of the shorewall process.
Impact
=====
An attacker could exploit this vulnerability to overwrite arbitrary system files with root privileges, resulting in Denial of Service or further exploitation.
Workaround
=========
There is no known workaround at this time. All users should upgrade to the latest available version of Shorewall.
Resolution
=========
All users should upgrade to the latest available version of Shorewall, as follows:
# emerge sync
# emerge -pv ">=net-firewall/shorewall-1.4.10f"
# emerge ">=net-firewall/shorewall-1.4.10f"
References
=========
[ 1 ] Shorewall Announcement
http://lists.shorewall.net/pipermail/shorewall-announce/2004-June/000385.html
Availability
===========
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200407-07.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 2004 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/1.0
=========
Shorewall is a high level tool for configuring Netfilter, the firewall facility included in the Linux Kernel.
Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-firewall/shorewall <= 1.4.10c >= 1.4.10f
Description
==========
Shorewall uses temporary files and directories in an insecure manner. A local user could create symbolic links at specific locations, eventually overwriting other files on the filesystem with the rights of the shorewall process.
Impact
=====
An attacker could exploit this vulnerability to overwrite arbitrary system files with root privileges, resulting in Denial of Service or further exploitation.
Workaround
=========
There is no known workaround at this time. All users should upgrade to the latest available version of Shorewall.
Resolution
=========
All users should upgrade to the latest available version of Shorewall, as follows:
# emerge sync
# emerge -pv ">=net-firewall/shorewall-1.4.10f"
# emerge ">=net-firewall/shorewall-1.4.10f"
References
=========
[ 1 ] Shorewall Announcement
http://lists.shorewall.net/pipermail/shorewall-announce/2004-June/000385.html
Availability
===========
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200407-07.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 2004 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/1.0
