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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 86.5%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 86.49% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 2 October 2017
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- thekelleys/dnsmasq · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation · canonical/ubuntu linux · debian/debian linux · opensuse/leap · suse/linux enterprise debuginfo · suse/linux enterprise point of sale · suse/linux enterprise server · nvidia/linux for tegra · nvidia/geforce experience · huawei/honor v9 play firmware · arista/eos · siemens/ruggedcom rm1224 firmware · siemens/scalance m-800 firmware · siemens/scalance s615 firmware · siemens/scalance w1750d firmware · arubanetworks/arubaos · synology/router manager · +1 more
- Source
- cve@mitre.org
EPSS moved from 86.5% on 21 October 2026 to 86.5% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
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://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=0549c73b7ea6b22a3c49beb4d432f185a81efcbc
- 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.huawei.com/en/psirt/security-advisories/huawei-sa-20171103-01-dnsmasq-enThird 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/527KNN34RN2SB6MBJG7CKSEBWYE3TJEB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5MMPCJOYPPL4B5RBY4U425PWG7EETDTD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YXRZ2W6TV6NLUJC5NOFBSG6PZSMDTYPV/
- https://security.gentoo.org/glsa/201710-27Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.