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Vulnerability record · CVE-2012-3411 · published 5 March 2013

CVE-2012-3411: Thekelleys dnsmasq improper input validation vulnerability

Thekelleys · Dnsmasq

Dnsmasq before 2.63test1, when used with certain libvirt configurations, replies to requests from prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed DNS query.

5.0 CVSS 2.0 Medium EPSS 5.0% · top 8.0% CWE-20 · Improper input validation
5.0CVSS 2.0 base score
5.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
22References
16 Jun 2026Last modified by NVD

Description

Dnsmasq before 2.63test1, when used with certain libvirt configurations, replies to requests from prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed DNS query.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683372 Issue TrackingThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2013-0276.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2013-0277.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2013-0579.html Third Party Advisory
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=2f38141f434e23292f84cefc33e8de76fb856147
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=54dd393f3938fc0c19088fbd319b95e37d81a2b0
http://www.mandriva.com/security/advisories?name=MDVSA-2013:072 Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/07/12/5 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/54353 Third Party AdvisoryVDB Entry
http://www.thekelleys.org.uk/dnsmasq/CHANGELOG Release NotesVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=833033 Issue TrackingPatchThird Party Advisory
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683372 Issue TrackingThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2013-0276.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2013-0277.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2013-0579.html Third Party Advisory
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=2f38141f434e23292f84cefc33e8de76fb856147
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=54dd393f3938fc0c19088fbd319b95e37d81a2b0
http://www.mandriva.com/security/advisories?name=MDVSA-2013:072 Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/07/12/5 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/54353 Third Party AdvisoryVDB Entry
http://www.thekelleys.org.uk/dnsmasq/CHANGELOG Release NotesVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=833033 Issue TrackingPatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2012-3411), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.