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CVE-2017-13704

Published: 2 October 2017

In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.

Notes

AuthorNote
mdeslaur
regression introduced in 2.77

Priority

High

CVSS 3 base score: 7.5

Status

Package Release Status
dnsmasq
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Not vulnerable

trusty Not vulnerable
(2.68-1ubuntu0.1)
xenial Not vulnerable
(2.75-1ubuntu0.16.04.2)
zesty Not vulnerable
(2.76-5)