Shadow Utils useradd utility sets incorrect file permissions

Overview

The Shadow Utilities contain a vulnerability that may result in new user mailboxes having arbitrary permissions.

Description

The Shadow Utilities provide tools to manage user accounts.

When a new mailbox is created using the useradd utility, the open() function does not receive the expected arguments while O_CREAT is present. The result of this error is that random permissions are applied to the new mailbox.

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Impact

A local, unprivileged attacker may be able to gain access to newly created mailbox files.

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Solution

Affected vendors have released updates to address this issue. Users are encouraged to see the Systems Affected portion of this document for a partial list of affected vendors.

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Vendor Information

312692

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Gentoo Linux __ Affected

Notified: May 17, 2006 Updated: December 14, 2007

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

See <http://www.gentoo.org/security/en/glsa/glsa-200606-02.xml&gt; for more details.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23312692 Feedback>).

Apple Computer, Inc. __ Not Affected

Notified: May 17, 2006 Updated: May 23, 2006

Status

Not Affected

Vendor Statement

Mac OS X does not ship with shadow-utils installed.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

F5 Networks, Inc. __ Not Affected

Notified: May 17, 2006 Updated: May 22, 2006

Status

Not Affected

Vendor Statement

This is a local vulnerability on BIG-IP and as such will be patched at the next release.

FirePass is not vulnerable.
WANJet is not vulnerable.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Openwall GNU/*/Linux __ Not Affected

Notified: May 17, 2006 Updated: May 17, 2006

Status

Not Affected

Vendor Statement

Openwall GNU/*/Linux (Owl) is not affected. We had fixed this issue while introducing this functionality into Owl in November, 2001. With our re-implementation of the patch, the mailbox had always been created with mode 0 (no permissions) initially and only set to the intended mode after a successful change of its owner and group.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Cisco Systems, Inc. Unknown

Notified: May 12, 2006 Updated: May 12, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Conectiva Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Cray Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Debian GNU/Linux Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

EMC, Inc. (formerly Data General Corporation) Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Engarde Secure Linux Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Fedora Project Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

FreeBSD, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Fujitsu Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Hewlett-Packard Company Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Hitachi Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

IBM Corporation Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

IBM Corporation (zseries) Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

IBM eServer Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Immunix Communications, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Ingrian Networks, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Juniper Networks, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Mandriva, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Microsoft Corporation Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

MontaVista Software, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

NEC Corporation Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

NetBSD Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Nokia Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Novell, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

OpenBSD Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

QNX, Software Systems, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Red Hat, Inc. Unknown

Notified: May 12, 2006 Updated: May 12, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

SUSE Linux Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Silicon Graphics, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Slackware Linux Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Sony Corporation Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Sun Microsystems, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Trustix Secure Linux Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Turbolinux Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Ubuntu Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Unisys Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Wind River Systems, Inc. Unknown

Notified: May 17, 2006 Updated: May 17, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

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CVSS Metrics

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References

• <http://linux.die.net/man/8/useradd&gt;
• <http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Deployment_Guide-en-US/s1-users-tools.html&gt;
• <http://www.gentoo.org/security/en/glsa/glsa-200606-02.xml&gt;
• <http://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/shadow-utils/shadow-4.0.4.1-owl-create-mailbox.diff?rev=HEAD&gt;
• <http://www.securityfocus.com/archive/1/archive/1/468336/100/0/threaded&gt;
• <https://www.securecoding.cert.org/confluence/x/VQBc&gt;

Acknowledgements

This document was written by Jeff Gennari.

Other Information

CVE IDs:	CVE-2006-1174
Severity Metric:	0.23 Date Public: