CVE-2017-14491
CRITICALCVSS 9.8/10EPSS 84.92%
Last modified
CVE-2017-14491 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Heap-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 DNS response.. EPSS estimates a 84.92% chance of exploitation in the next 30 days.
Description
Heap-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 DNS response.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Thekelleys | Dnsmasq | <= 2.77 | — |
| Redhat | Enterprise Linux Desktop | 6.0 | — |
| Redhat | Enterprise Linux Desktop | 7.0 | — |
| Redhat | Enterprise Linux Server | 6.0 | — |
| Redhat | Enterprise Linux Server | 7.0 | — |
| Redhat | Enterprise Linux Workstation | 6.0 | — |
| Redhat | Enterprise Linux Workstation | 7.0 | — |
| Canonical | Ubuntu Linux | 12.04 | — |
| Canonical | Ubuntu Linux | 14.04 | — |
| Canonical | Ubuntu Linux | 16.04 | — |
| Canonical | Ubuntu Linux | 17.04 | — |
| Debian | Debian Linux | 7.0 | — |
| Debian | Debian Linux | 7.1 | — |
| Debian | Debian Linux | 8.0 | — |
| Debian | Debian Linux | 9.0 | — |
| Opensuse | Leap | 42.2 | — |
| Opensuse | Leap | 42.3 | — |
| Suse | Linux Enterprise Debuginfo | 11 | Sp3 |
| Suse | Linux Enterprise Point Of Sale | 11 | Sp3 |
| Suse | Linux Enterprise Server | 11 | Sp3 |
| Suse | Linux Enterprise Server | 12 | — |
| Nvidia | Linux For Tegra | < r21.6 | — |
| Nvidia | Linux For Tegra | < r24.2.2 | — |
| Nvidia | Geforce Experience | >= 3.0, < 3.10.0.55 | — |
| Huawei | Honor V9 Play Firmware | < jimmy-al00ac00b135 | — |
| Arista | Eos | <= 4.15 | — |
| Arista | Eos | >= 4.16, < 4.16.13m | — |
| Arista | Eos | >= 4.17, < 4.17.8m | — |
| Arista | Eos | >= 4.18, <= 4.18.4.2f | — |
| Siemens | Ruggedcom Rm1224 Firmware | < 5.0 | — |
| Siemens | Scalance M-800 Firmware | < 5.0 | — |
| Siemens | Scalance S615 Firmware | < 5.0 | — |
| Siemens | Scalance W1750d Firmware | < 6.5.1.5 | — |
| Arubanetworks | Arubaos | >= 6.3.1, < 6.3.1.25 | — |
| Arubanetworks | Arubaos | >= 6.4.4.0, < 6.4.4.16 | — |
| Arubanetworks | Arubaos | >= 6.5.0.0, < 6.5.1.9 | — |
| Arubanetworks | Arubaos | >= 6.5.3.0, < 6.5.3.3 | — |
| Arubanetworks | Arubaos | >= 6.5.4.0, < 6.5.4.2 | — |
| Arubanetworks | Arubaos | >= 8.1.0.0, < 8.1.0.4 | — |
| Synology | Router Manager | 1.1 | — |
| Synology | Diskstation Manager | 5.2 | — |
| Synology | Diskstation Manager | 6.0 | — |
| Synology | Diskstation Manager | 6.1 | — |
References
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00003.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00004.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00005.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.htmlMailing List, Third Party Advisory
- http://nvidia.custhelp.com/app/answers/detail/a_id/4560Third Party Advisory
- http://nvidia.custhelp.com/app/answers/detail/a_id/4561Third Party Advisory
- http://packetstormsecurity.com/files/144480/Dnsmasq-2-Byte-Heap-Based-Overflow.htmlExploit, Third Party Advisory, VDB Entry
- http://thekelleys.org.uk/dnsmasq/CHANGELOGRelease Notes, Vendor Advisory
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txtThird Party Advisory
- http://www.debian.org/security/2017/dsa-3989Third Party Advisory
- http://www.securityfocus.com/bid/101085Broken Link
- http://www.securityfocus.com/bid/101977Broken Link
- http://www.securitytracker.com/id/1039474Broken Link
- http://www.ubuntu.com/usn/USN-3430-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3430-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3430-3Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2836Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2837Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2838Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2839Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2840Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2841Third Party Advisory
- https://access.redhat.com/security/vulnerabilities/3199382Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdfPatch, Third Party Advisory
- https://security.gentoo.org/glsa/201710-27Third Party Advisory
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.htmlThird Party Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/3577-security-advisory-30Mitigation, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3989Third Party Advisory
- https://www.exploit-db.com/exploits/42941/Exploit, Third Party Advisory, VDB Entry
- https://www.kb.cert.org/vuls/id/973527Third Party Advisory, US Government Resource
- https://www.synology.com/support/security/Synology_SA_17_59_DnsmasqThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00003.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00004.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00005.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.htmlMailing List, Third Party Advisory
- http://nvidia.custhelp.com/app/answers/detail/a_id/4560Third Party Advisory
- http://nvidia.custhelp.com/app/answers/detail/a_id/4561Third Party Advisory
- http://packetstormsecurity.com/files/144480/Dnsmasq-2-Byte-Heap-Based-Overflow.htmlExploit, Third Party Advisory, VDB Entry
- http://thekelleys.org.uk/dnsmasq/CHANGELOGRelease Notes, Vendor Advisory
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txtThird Party Advisory
- http://www.debian.org/security/2017/dsa-3989Third Party Advisory
- http://www.securityfocus.com/bid/101085Broken Link
- http://www.securityfocus.com/bid/101977Broken Link
- http://www.securitytracker.com/id/1039474Broken Link
- http://www.ubuntu.com/usn/USN-3430-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3430-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3430-3Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2836Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2837Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2838Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2839Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2840Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2841Third Party Advisory
- https://access.redhat.com/security/vulnerabilities/3199382Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdfPatch, Third Party Advisory
- https://security.gentoo.org/glsa/201710-27Third Party Advisory
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.htmlThird Party Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/3577-security-advisory-30Mitigation, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3989Third Party Advisory
- https://www.exploit-db.com/exploits/42941/Exploit, Third Party Advisory, VDB Entry
- https://www.kb.cert.org/vuls/id/973527Third Party Advisory, US Government Resource
- https://www.synology.com/support/security/Synology_SA_17_59_DnsmasqThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-14491?
Heap-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 DNS response.
How severe is CVE-2017-14491?
CVE-2017-14491 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 84.92% probability of exploitation in the next 30 days.
How do I fix CVE-2017-14491?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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