{"id":"CVE-2007-3843","url":"https://www.cyber-defence.io/tools/cve/CVE-2007-3843","generatedAt":"2026-10-27T18:33:13.131Z","title":"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…","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.","published":"2007-08-09T21:17:00.000Z","lastModified":"2026-06-16T22:42:53.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":4.3,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N"},"cwe":[],"affected":["linux/linux kernel"],"epss":{"score":0.02624,"percentile":0.85372,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.62%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595","source":"secalert@redhat.com"},{"url":"http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/26366","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/26647","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/26760","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/27436","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/27747","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/27912","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/28806","source":"secalert@redhat.com"},{"url":"http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm","source":"secalert@redhat.com"},{"url":"http://www.debian.org/security/2007/dsa-1363","source":"secalert@redhat.com"},{"url":"http://www.redhat.com/support/errata/RHSA-2007-0705.html","source":"secalert@redhat.com"},{"url":"http://www.redhat.com/support/errata/RHSA-2007-0939.html","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/25244","source":"secalert@redhat.com"},{"url":"http://www.ubuntu.com/usn/usn-510-1","source":"secalert@redhat.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9670","source":"secalert@redhat.com"},{"url":"http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/26366","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/26647","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/26760","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/27436","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/27747","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/27912","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/28806","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2007/dsa-1363","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2007-0705.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2007-0939.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/25244","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/usn-510-1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9670","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2007-3843","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}