What’s Vulnerable › Vulnerabilities

CVE-2007-3843

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2007-08-09 · updated 2026-06-16

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.

Affected products

• Linux kernel: through 2.6.22

References

• http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595
• http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1
• http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html
• http://secunia.com/advisories/26366
• http://secunia.com/advisories/26647
• http://secunia.com/advisories/26760
• http://secunia.com/advisories/27436
• http://secunia.com/advisories/27747
• http://secunia.com/advisories/27912
• http://secunia.com/advisories/28806
• http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm

Get alerted when CVE-2007-3843 or the next vulnerability affects your stack