Samba NDR MS-RPC heap buffer overflow

Overview

Samba fails to properly handle malformed MS-RPC packets. Exploitation of this vulnerability could allow a remote attacker to execute arbitrary code.

Description

Samba is a widely used open-source implementation of Server Message Block (SMB)/Common Internet File System (CIFS). Network Data Representation (NDR) is the scheme to encode MS-RPC data for transport. Samba fails to properly validate MS-RPC packets. Specifically, Samba’s NDR functions do not properly validate arguments supplied to memory allocation routines. This results in a buffer of insufficient size being allocated. When data is copied to this buffer, a heap-based buffer overflow may occur.

More information is available in Samba’s Security Announcement.

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Impact

A remote attacker may be able to execute arbitrary code.

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Solution

Apply a patch or upgrade
These vulnerabilities are addressed in Samba version 3.0.25. In addition, patches are available to address this vulnerability in Samba version 3.0.24. Refer to the Samba Security Releases website for more information.

Administrators who get Samba from their operating system vendor should see the systems affected portion of this document for a list of affected vendors.

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Vendor Information

773720

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Debian GNU/Linux __ Affected

Notified: May 14, 2007 Updated: July 30, 2007

Status

Affected

Vendor Statement

These problems have been fixed in Debian GNU/Linux 4.0 with version 3.0.24-6etch1 via Debian Security Advisory 1291 as in

<<http://www.debian.org/security/2007/dsa-1291&gt;&gt;

Vendor Information

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

Red Hat, Inc. __ Affected

Notified: May 14, 2007 Updated: May 15, 2007

Status

Affected

Vendor Statement

This issue affected the Samba package as shipped with Red Hat Enterprise Linux 2.1, 4, 4, and 5. Updated packages to correct this issue are available along with our advisories at the URLs below and via Red Hat Network.

<http://rhn.redhat.com/errata/RHSA-2007-0354.html&gt;

Vendor Information

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

Samba __ Affected

Updated: May 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

Refer to <http://samba.org/samba/security/CVE-2007-2446.html&gt;.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23773720 Feedback>).

Apple Computer, Inc. Unknown

Notified: May 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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.

F5 Networks, Inc. Unknown

Notified: May 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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.

Gentoo Linux Unknown

Notified: May 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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.

Openwall GNU/*/Linux Unknown

Notified: May 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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.

The SCO Group Unknown

Notified: May 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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 14, 2007 Updated: May 14, 2007

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://samba.org/samba/security/CVE-2007-2446.html&gt;
• <http://samba.org/samba/history/security.html&gt;
• <http://www.samba.org/samba/history/samba-3.0.25.html&gt;
• <http://secunia.com/advisories/25232/&gt;
• <http://www.zerodayinitiative.com/advisories/ZDI-07-029.html&gt;
• <http://www.zerodayinitiative.com/advisories/ZDI-07-030.html&gt;
• <http://www.zerodayinitiative.com/advisories/ZDI-07-031.html&gt;
• <http://www.zerodayinitiative.com/advisories/ZDI-07-032.html&gt;
• <http://www.zerodayinitiative.com/advisories/ZDI-07-033.html&gt;
• <http://www.iss.net/threats/266.html&gt;
• <http://sunsolve.sun.com/search/document.do?assetkey=1-26-102964-1&gt;
• <http://docs.info.apple.com/article.html?artnum=306172&gt;

Acknowledgements

This vulnerability was reported by the Samba Team. Samba, in turn credits Brian Schafer of TippingPoint.

This document was written by Jeff Gennari.

Other Information

CVE IDs:	CVE-2007-2446
Severity Metric:	7.65 Date Public: