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CVE-2007-3843

4.3 · MEDIUM

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 se…

Published Aug 9, 2007linuxEPSS 2.62%

Overview

CVE-2007-3843 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 9, 2007 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel0Affected

References

Refbugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595Refkernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1Reflists.opensuse.org/opensuse-security-announce/2007-12/msg00001.htmlReflists.opensuse.org/opensuse-security-announce/2008-02/msg00002.htmlRefsecunia.com/advisories/26366Refsecunia.com/advisories/26647Refsecunia.com/advisories/26760Refsecunia.com/advisories/27436Refsecunia.com/advisories/27747Refsecunia.com/advisories/27912

How CyberStrike helps

Frequently asked questions

What is CVE-2007-3843?

CVE-2007-3843 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 9, 2007 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2007-3843?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2007-3843?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2007-3843?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2007-3843 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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