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Vulnerability Details : CVE-2007-3843

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.
Publish Date : 2007-08-09 Last Update Date : 2010-08-21
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID CWE id is not defined for this vulnerability

- Vendor Statements

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

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat low 2007-08-02 2007-06-08
If you are a vendor and you have additional data which can be automatically imported into our database, please contact admin @

- Related OVAL Definitions

Title Definition Id Class Family
CVE-2007-3843 unix
DSA-1363-1 linux-2.6 oval:org.mitre.oval:def:20520 unix
ELSA-2007:0705: kernel security update (Important) oval:org.mitre.oval:def:22545 unix
RHSA-2007:0705: kernel security update (Important) oval:com.redhat.rhsa:def:20070705 unix
RHSA-2007:0939: kernel security update (Important) oval:com.redhat.rhsa:def:20070939 unix
The Linux kernel before 2.6.23-rc1 checks the wrong global variable for the CIFS sec mount option, which might allow rem... oval:org.mitre.oval:def:9670 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2007-3843

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 2.6.22 RC6 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1

- References For CVE-2007-3843
SUSE SUSE-SA:2007:064
SUSE SUSE-SA:2008:006
BID 25244 Linux Kernel CIFS Local Security Bypass Weakness Release Date:2008-02-08
REDHAT RHSA-2007:0939
REDHAT RHSA-2007:0705

- Metasploit Modules Related To CVE-2007-3843

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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