Read the docs
TI-2017-10596 Aliases CVE-2017-14493GHSA-7mpq-366q-m6vq

Stack-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a…

Priority HIGH 84CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

Stack-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DHCPv6 request.

Why it matters now

EPSS 0.85243 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:17.04:*:*:*:*:*:*:*17.04VulnerableCanonical
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:7.1:*:*:*:*:*:*:*7.1VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*42.2VulnerableopenSUSE
cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*42.3VulnerableopenSUSE
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:17.04:*:*:*:*:*:*:* Versions 17.04 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:* Versions 42.2 Vulnerable ·openSUSE
  • cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:* Versions 42.3 Vulnerable ·openSUSE
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*up to 2.77VulnerableThekelleys
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* Versions up to 2.77 Vulnerable ·Thekelleys

Remediation

Red Hat 2 advisories

  • RHSA-2017:2836 Released 2017-10-02 · Red Hat rating Critical
    dnsmasq security update
    • Red Hat Enterprise Linux Client (v. 7) dnsmasq-2.76-2.el7_4.2
    • Red Hat Enterprise Linux Client Optional (v. 7) dnsmasq-utils-2.76-2.el7_4.2
    • Red Hat Enterprise Linux ComputeNode (v. 7) dnsmasq-2.76-2.el7_4.2
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) dnsmasq-utils-2.76-2.el7_4.2
    • Red Hat Enterprise Linux Server (v. 7) dnsmasq-2.76-2.el7_4.2
    • Red Hat Enterprise Linux Server Optional (v. 7) dnsmasq-utils-2.76-2.el7_4.2
    • Red Hat Enterprise Linux Workstation (v. 7) dnsmasq-2.76-2.el7_4.2
    • Red Hat Enterprise Linux Workstation Optional (v. 7) dnsmasq-utils-2.76-2.el7_4.2
  • RHSA-2017:2837 Released 2017-10-02 · Red Hat rating Critical
    dnsmasq security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.2) dnsmasq-2.66-14.el7_2.2
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) dnsmasq-2.66-21.el7_3.2
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2) dnsmasq-utils-2.66-14.el7_2.2
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) dnsmasq-utils-2.66-21.el7_3.2
    • Red Hat Enterprise Linux Server EUS (v. 7.2) dnsmasq-2.66-14.el7_2.2
    • Red Hat Enterprise Linux Server EUS (v. 7.3) dnsmasq-2.66-21.el7_3.2
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.2) dnsmasq-utils-2.66-14.el7_2.2
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.3) dnsmasq-utils-2.66-21.el7_3.2

Vendor assessments

Red Hat

Red Hat rating: Critical. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:2836
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:2836
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2017:2836
Red Hat Enterprise Linux ComputeNode EUS (v. 7.2)Fixed RHSA-2017:2837
Red Hat Enterprise Linux ComputeNode EUS (v. 7.3)Fixed RHSA-2017:2837
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:2836
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2)Fixed RHSA-2017:2837
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3)Fixed RHSA-2017:2837
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:2836
Red Hat Enterprise Linux Server EUS (v. 7.2)Fixed RHSA-2017:2837
Red Hat Enterprise Linux Server EUS (v. 7.3)Fixed RHSA-2017:2837
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:2836
Red Hat Enterprise Linux Server Optional EUS (v. 7.2)Fixed RHSA-2017:2837
Red Hat Enterprise Linux Server Optional EUS (v. 7.3)Fixed RHSA-2017:2837
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:2836
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:2836
Not affected: 9 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
  • Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
  • Red Hat OpenStack Platform 10 (Newton)
  • Red Hat OpenStack Platform 11 (Ocata)
  • Red Hat OpenStack Platform 12 (Pike)
  • Red Hat OpenStack Platform 8 (Liberty)
  • Red Hat OpenStack Platform 9 (Mitaka)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-14493
  2. 2026-10-03 Alias added: GHSA-7mpq-366q-m6vq

References

Exploit 1

Patch 2

Advisory 11

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences