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    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.

    Published:Oct 2, 2017
    Last Modified:Apr 20, 2025
    EPS:Oct 2, 2017
    EPSS Score:0.52378
    CVSS Score:9.8

    Affected Products

    Vendor
    Arista
    Product
    Eos
    Vendor
    Arubanetworks
    Product
    Arubaos
    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Huawei
    Product
    Honor V9 Play
    Vendor
    Huawei
    Product
    Honor V9 Play Firmware
    Vendor
    Microsoft
    Product
    Windows
    Vendor
    Nvidia
    Product
    Geforce Experience
    Vendor
    Nvidia
    Product
    Jetson Tk1
    Vendor
    Nvidia
    Product
    Jetson Tx1
    Vendor
    Nvidia
    Product
    Linux For Tegra
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Mission Critical
    Vendor
    Redhat
    Product
    Rhel Tus
    Vendor
    Siemens
    Product
    Ruggedcom Rm1224
    Vendor
    Siemens
    Product
    Ruggedcom Rm1224 Firmware
    Vendor
    Siemens
    Product
    Scalance M-800
    Vendor
    Siemens
    Product
    Scalance M-800 Firmware
    Vendor
    Siemens
    Product
    Scalance S615
    Vendor
    Siemens
    Product
    Scalance S615 Firmware
    Vendor
    Siemens
    Product
    Scalance W1750d
    Vendor
    Siemens
    Product
    Scalance W1750d Firmware
    Vendor
    Suse
    Product
    Linux Enterprise Debuginfo
    Vendor
    Suse
    Product
    Linux Enterprise Point Of Sale
    Vendor
    Suse
    Product
    Linux Enterprise Server
    Vendor
    Synology
    Product
    Diskstation Manager
    Vendor
    Synology
    Product
    Router Manager
    Vendor
    Thekelleys
    Product
    Dnsmasq

    Exploits

    http://packetstormsecurity.com/files/144480/Dnsmasq-2-Byte-Heap-Based-Overflow.htmlhttps://www.exploit-db.com/exploits/42941/http://packetstormsecurity.com/files/144480/Dnsmasq-2-Byte-Heap-Based-Overflow.htmlhttps://www.exploit-db.com/exploits/42941/https://www.exploit-db.com/exploits/42941https://github.com/skyformat99/dnsmasq-2.4.1-fix-CVE-2017-14491

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-2379 (CVSS 8.2) — On affected platforms with hardware IPSec support running Arista EOS with certain IPsec features enabled, EOS …
    CVE-2026-7473 (CVSS 6.9) — On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Ext…
    CVE-2025-8873 (CVSS 8.7) — On affected platforms running Arista EOS with IPsec configured, a specially crafted packet can cause the datap…
    CVE-2023-5502 (CVSS 8.2) — On affected platforms running Arista EOS with 802.1x authentication configured on the access/trunk ports, and …
    CVE-2024-27892 (CVSS 7.2) — Affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request can be run when it should…
    CVE-2024-27890 (CVSS 7.2) — Affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request can be run when it should…
    CVE-2024-27891 (CVSS 6.9) — On affected platforms running Arista EOS with MACsec and egress ACLs configured on the same interfaces, the AC…
    CVE-2024-6858 (CVSS 6.5) — In Arista’s EOS when in 802.1X mode, multi-auth unauthenticated hosts might be allowed access to a switch port…
    CVE-2025-7048 (CVSS 5.3) — On affected platforms running Arista EOS with MACsec configuration, a specially crafted packet can cause the M…
    CVE-2025-8872 (CVSS 7.1) — On affected platforms running Arista EOS with OSPFv3 configured, a specially crafted packet can cause the OSFP…

    References

    http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00003.html
    http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00004.html
    http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00005.html
    http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
    http://nvidia.custhelp.com/app/answers/detail/a_id/4560
    http://nvidia.custhelp.com/app/answers/detail/a_id/4561
    http://packetstormsecurity.com/files/144480/Dnsmasq-2-Byte-Heap-Based-Overflow.html
    http://thekelleys.org.uk/dnsmasq/CHANGELOG
    http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=0549c73b7ea6b22a3c49beb4d432f185a81efcbc
    http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt
    http://www.debian.org/security/2017/dsa-3989
    http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171103-01-dnsmasq-en
    http://www.securityfocus.com/bid/101085
    http://www.securityfocus.com/bid/101977
    http://www.securitytracker.com/id/1039474
    http://www.ubuntu.com/usn/USN-3430-1
    http://www.ubuntu.com/usn/USN-3430-2
    http://www.ubuntu.com/usn/USN-3430-3
    https://access.redhat.com/errata/RHSA-2017:2836
    https://access.redhat.com/errata/RHSA-2017:2837
    https://access.redhat.com/errata/RHSA-2017:2838
    https://access.redhat.com/errata/RHSA-2017:2839
    https://access.redhat.com/errata/RHSA-2017:2840
    https://access.redhat.com/errata/RHSA-2017:2841
    https://access.redhat.com/security/vulnerabilities/3199382
    https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf
    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/201710-27
    https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
    https://www.arista.com/en/support/advisories-notices/security-advisories/3577-security-advisory-30
    https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-449
    https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-449/
    https://www.debian.org/security/2017/dsa-3989
    https://www.exploit-db.com/exploits/42941/
    https://www.kb.cert.org/vuls/id/973527
    https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html
    https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html
    https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq
    http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00003.html
    http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00004.html
    http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00005.html
    http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
    http://nvidia.custhelp.com/app/answers/detail/a_id/4560
    http://nvidia.custhelp.com/app/answers/detail/a_id/4561
    http://packetstormsecurity.com/files/144480/Dnsmasq-2-Byte-Heap-Based-Overflow.html
    http://thekelleys.org.uk/dnsmasq/CHANGELOG
    http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=0549c73b7ea6b22a3c49beb4d432f185a81efcbc
    http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt
    http://www.debian.org/security/2017/dsa-3989
    http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171103-01-dnsmasq-en
    http://www.securityfocus.com/bid/101085
    http://www.securityfocus.com/bid/101977
    http://www.securitytracker.com/id/1039474
    http://www.ubuntu.com/usn/USN-3430-1
    http://www.ubuntu.com/usn/USN-3430-2
    http://www.ubuntu.com/usn/USN-3430-3
    https://access.redhat.com/errata/RHSA-2017:2836
    https://access.redhat.com/errata/RHSA-2017:2837
    https://access.redhat.com/errata/RHSA-2017:2838
    https://access.redhat.com/errata/RHSA-2017:2839
    https://access.redhat.com/errata/RHSA-2017:2840
    https://access.redhat.com/errata/RHSA-2017:2841
    https://access.redhat.com/security/vulnerabilities/3199382
    https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf
    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/201710-27
    https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
    https://www.arista.com/en/support/advisories-notices/security-advisories/3577-security-advisory-30
    https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-449
    https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-449/
    https://www.debian.org/security/2017/dsa-3989
    https://www.exploit-db.com/exploits/42941/
    https://www.kb.cert.org/vuls/id/973527
    https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html
    https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html
    https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High