National Cyber-Alert System

Vulnerability Summary for CVE-2007-3843

Overview

The Linux kernel before 2.6.23-rc1 checks the wrong global variable for the CIFS sec mount option, which might allow remote attackers to spoof CIFS network traffic that the client configured for security signatures, as demonstrated by lack of signing despite sec=ntlmv2i in a SetupAndX request.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

Vendor Statments (disclaimer)

Official Statement from Red Hat (10/18/2007)

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 2.1 or 3.

References to Advisories, Solutions, and Tools

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External Source: SECUNIA

Name: 26366

Hyperlink:http://secunia.com/advisories/26366

External Source: CONFIRM

Name: http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1

Hyperlink:http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1

External Source: CONFIRM

Name: http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595

Hyperlink:http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595

External Source: UBUNTU

Name: USN-510-1

Hyperlink:http://www.ubuntu.com/usn/usn-510-1

External Source: BID

Name: 25244

Hyperlink:http://www.securityfocus.com/bid/25244

External Source: REDHAT

Name: RHSA-2007:0939

Hyperlink:http://www.redhat.com/support/errata/RHSA-2007-0939.html

External Source: REDHAT

Name: RHSA-2007:0705

Hyperlink:http://www.redhat.com/support/errata/RHSA-2007-0705.html

External Source: DEBIAN

Name: DSA-1363

Hyperlink:http://www.debian.org/security/2007/dsa-1363

External Source: CONFIRM

Name: http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm

Hyperlink:http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm

External Source: SECUNIA

Name: 28806

Hyperlink:http://secunia.com/advisories/28806

External Source: SECUNIA

Name: 27912

Hyperlink:http://secunia.com/advisories/27912

External Source: SECUNIA

Name: 27747

Hyperlink:http://secunia.com/advisories/27747

External Source: SECUNIA

Name: 27436

Hyperlink:http://secunia.com/advisories/27436

External Source: SECUNIA

Name: 26760

Hyperlink:http://secunia.com/advisories/26760

External Source: SECUNIA

Name: 26647

Hyperlink:http://secunia.com/advisories/26647

External Source: SUSE

Name: SUSE-SA:2008:006

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html

External Source: SUSE

Name: SUSE-SA:2007:064

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html