Dnsmasq before 2.63test1, when used with certain libvirt configurations, replies to…
Priority LOW 31CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Partial Red Hat: 10 fixed, 1 without a fix
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
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.
Why it matters now
EPSS 0.0507 92nd percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 10 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* | up to 2.62 | Vulnerable | Thekelleys |
| cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
- cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* Versions up to 2.62 Vulnerable ·Thekelleys
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
Remediation
Red Hat 3 advisories
- RHSA-2013:0579 Released 2013-02-28 · Red Hat rating Importantrhev-hypervisor6 security, bug fix, and enhancement update
- RHEV Hypervisor for RHEL-6 rhev-hypervisor6-6.4-20130221.0.el6
- RHSA-2013:0277 Released 2013-02-20 · Red Hat rating Moderatednsmasq security, bug fix and enhancement update
- Red Hat Enterprise Linux Desktop (v. 6) dnsmasq-2.48-13.el6
- Red Hat Enterprise Linux Desktop Optional (v. 6) dnsmasq-2.48-13.el6, dnsmasq-utils-2.48-13.el6
- Red Hat Enterprise Linux HPC Node (v. 6) dnsmasq-2.48-13.el6
- Red Hat Enterprise Linux HPC Node Optional (v. 6) dnsmasq-2.48-13.el6, dnsmasq-utils-2.48-13.el6
- Red Hat Enterprise Linux Server (v. 6) dnsmasq-2.48-13.el6
- Red Hat Enterprise Linux Server Optional (v. 6) dnsmasq-2.48-13.el6, dnsmasq-utils-2.48-13.el6
- Red Hat Enterprise Linux Workstation (v. 6) dnsmasq-2.48-13.el6
- Red Hat Enterprise Linux Workstation Optional (v. 6) dnsmasq-2.48-13.el6, dnsmasq-utils-2.48-13.el6
- RHSA-2013:0276 Released 2013-02-20 · Red Hat rating Moderatelibvirt security, bug fix, and enhancement update
- Red Hat Enterprise Linux Desktop (v. 6) 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) libvirt-0.10.2-18.el6, libvirt-devel-0.10.2-18.el6, libvirt-lock-sanlock-0.10.2-18.el6
- Red Hat Enterprise Linux HPC Node (v. 6) 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) libvirt-0.10.2-18.el6, libvirt-devel-0.10.2-18.el6, libvirt-lock-sanlock-0.10.2-18.el6
- Red Hat Enterprise Linux Server (v. 6) libvirt-0.10.2-18.el6, libvirt-client-0.10.2-18.el6, libvirt-client-0.10.2-18.el6.ppc +3
- Red Hat Enterprise Linux Server Optional (v. 6) libvirt-0.10.2-18.el6, libvirt-lock-sanlock-0.10.2-18.el6
- Red Hat Enterprise Linux Workstation (v. 6) libvirt-0.10.2-18.el6, libvirt-client-0.10.2-18.el6, libvirt-devel-0.10.2-18.el6 +1
- Red Hat Enterprise Linux Workstation Optional (v. 6) libvirt-0.10.2-18.el6, libvirt-lock-sanlock-0.10.2-18.el6
- Red Hat Storage Server 3 libvirt-lock-sanlock-0.10.2-18.el6
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| RHEV Hypervisor for RHEL-6 | Fixed | RHSA-2013:0579 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2013:0276, RHSA-2013:0277 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2013:0276, RHSA-2013:0277 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2013:0276, RHSA-2013:0277 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2013:0276, RHSA-2013:0277 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2013:0276, RHSA-2013:0277 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2013:0276, RHSA-2013:0277 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2013:0276, RHSA-2013:0277 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2013:0276, RHSA-2013:0277 |
| Red Hat Storage Server 3 | Fixed | RHSA-2013:0276 |
Timeline
- 2026-10-02 Threatist record created from CVE-2012-3411
- 2026-10-03 Alias added: GHSA-gj79-j4q7-5h4x
References
Advisory 7
- MDVSA-2013:072
- RHSA-2013:0276
- [oss-security] 20120712 Re: Re: CVE Request -- dnsmasq: When being run by libvirt open DNS proxy (reachable out-of the virtual network set for the particular guest domain too) is created
- RHSA-2013:0579
- http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683372
- RHSA-2013:0277
Sources
- CVE-2012-3411 · CVE Program
- CVE-2012-3411 · NVD
- FIRST EPSS
- GHSA-gj79-j4q7-5h4x · GitHub Advisory Database · CC BY 4.0
- CVE-2012-3411 · Red Hat security data · CC BY 4.0
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