CVE-2018-5740

Published: 09 August 2018

"deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c. Affects BIND 9.7.0->9.8.8, 9.9.0->9.9.13, 9.10.0->9.10.8, 9.11.0->9.11.4, 9.12.0->9.12.2, 9.13.0->9.13.2.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
bind9
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 18.04 LTS (Bionic Beaver)
Released (1:9.11.3+dfsg-1ubuntu1.2)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (1:9.10.3.dfsg.P4-8ubuntu1.11)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (1:9.9.5.dfsg-3ubuntu0.18)
Patches:
upstream: 98b2377de3125e4f12c05f0b04f8cac214b76120 (v9.11)
upstream: 02e8b3f8dcfdb9877cb053af7ca34809e8543420 (v9.11)
upstream: ba162bd0d49dfb699162712b1c22783bc88b1632 (v9.11)