CVE-2017-14496

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 68.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-10-03 · updated 2026-06-17
Weakness: CWE-191

Description

Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 17.04
Debian Linux: 7.0, 7.1, 9.0
Android: 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0 (+3)
Novell Leap: 42.2, 42.3
RedHat Enterprise Linux Desktop: 7.0
RedHat Enterprise Linux Server: 7.0
RedHat Enterprise Linux Workstation: 7.0
Simon Kelley dnsmasq: through 2.77

References

http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
http://nvidia.custhelp.com/app/answers/detail/a_id/4561
http://thekelleys.org.uk/dnsmasq/CHANGELOG
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=897c113fda0886a28a986cc6ba17bb93bd6cb1c7
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt
http://www.debian.org/security/2017/dsa-3989
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
https://access.redhat.com/errata/RHSA-2017:2836

Get alerted when CVE-2017-14496 or the next vulnerability affects your stack