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Fencer Intel
medium 5.0

CVE-2012-3411 json

Dnsmasq before 2.63test1, when used with certain libvirt configurations, replies to requests from prohibited interfaces, which allows remot…

published 2013-03-04 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-3381

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.1%
EPSS 5.1% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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.

Patch / fix

  • dnsmasq Debian 14, Debian 13, Debian 12 2.63-1

debian advisories DEBIAN-CVE-2012-3411

  • rhev-hypervisor6 RHEL 6 6.4-20130221.0.el6
  • dnsmasq RHEL 6 2.48-13.el6
  • dnsmasq-utils RHEL 6 2.48-13.el6
  • libvirt RHEL 6 0.10.2-18.el6
  • libvirt-client RHEL 6 0.10.2-18.el6
  • libvirt-python RHEL 6 0.10.2-18.el6
  • libvirt-lock-sanlock storage 3, RHEL 6 0.10.2-18.el6

red hat advisories RHSA-2013:0579RHSA-2013:0277RHSA-2013:0276

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-3411 updated cvss 5.0

libvirt+dnsmasq: DNS configured to answer DNS queries from non-virtual networks

  • Red Hat Enterprise Linux 5 dnsmasq
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Desktop (v. 6) dnsmasq 2.48-13.el6, libvirt 0.10.2-18.el6, libvirt-client 0.10.2-18.el6, libvirt-python 0.10.2-18.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) dnsmasq 2.48-13.el6, libvirt 0.10.2-18.el6, dnsmasq-utils 2.48-13.el6, libvirt-lock-sanlock 0.10.2-18.el6 Red Hat Enterprise Linux HPC Node (v. 6) dnsmasq 2.48-13.el6, libvirt 0.10.2-18.el6, libvirt-client 0.10.2-18.el6, libvirt-python 0.10.2-18.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) dnsmasq 2.48-13.el6, libvirt 0.10.2-18.el6, dnsmasq-utils 2.48-13.el6, libvirt-lock-sanlock 0.10.2-18.el6 Red Hat Enterprise Linux Server (v. 6) dnsmasq 2.48-13.el6, libvirt 0.10.2-18.el6, libvirt-client 0.10.2-18.el6, libvirt-python 0.10.2-18.el6 Red Hat Enterprise Linux Server Optional (v. 6) dnsmasq 2.48-13.el6, libvirt 0.10.2-18.el6, dnsmasq-utils 2.48-13.el6, libvirt-lock-sanlock 0.10.2-18.el6
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) dnsmasq 2.48-13.el6, libvirt 0.10.2-18.el6, libvirt-client 0.10.2-18.el6, libvirt-python 0.10.2-18.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) dnsmasq 2.48-13.el6, libvirt 0.10.2-18.el6, dnsmasq-utils 2.48-13.el6, libvirt-lock-sanlock 0.10.2-18.el6
    fixed: vendor fix RHSA-2013:0277
  • Red Hat Storage Server 3 libvirt-lock-sanlock 0.10.2-18.el6
    fixed: vendor fix RHSA-2013:0276
  • Red Hat RHEV Hypervisor for RHEL-6 rhev-hypervisor6 6.4-20130221.0.el6
    fixed: vendor fix RHSA-2013:0579

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.07% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.