critical
9.8
CWE
119
Advisory Published
CVE Published
Updated

CVE-2017-14492: Buffer Overflow

First published: Tue Sep 26 2017(Updated: )

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 IPv6 router advertisement request.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
debian/dnsmasq
2.80-1+deb10u1
2.85-1
2.89-1
redhat/dnsmasq<2.78
2.78
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=17.04
Debian=7.0
Debian=7.1
Debian=9.0
openSUSE=42.2
openSUSE=42.3
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Workstation=7.0
Dnsmasq<=2.77

Remedy

https://access.redhat.com/errata/RHSA-2017:2836

Remedy

https://access.redhat.com/errata/RHSA-2017:2837

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2017-14492?

    CVE-2017-14492 is classified as a high severity vulnerability due to the potential for remote code execution and denial of service.

  • How do I fix CVE-2017-14492?

    To mitigate CVE-2017-14492, update dnsmasq to version 2.80-1+deb10u1 or later, or 2.78 or later on Red Hat systems.

  • Which software is affected by CVE-2017-14492?

    CVE-2017-14492 affects dnsmasq versions prior to 2.78, including various distributions of Linux such as Debian and Ubuntu.

  • What type of vulnerability is CVE-2017-14492?

    CVE-2017-14492 is a heap-based buffer overflow vulnerability impacting the DHCP implementation in dnsmasq.

  • Can CVE-2017-14492 lead to denial of service?

    Yes, CVE-2017-14492 can lead to denial of service by crashing the dnsmasq service when a malformed IPv6 router advertisement is received.

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