CVE-2018-5740

high-risk
Published 2019-01-16

"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.

Do I need to act?

!
64.5% chance of exploitation in next 30 days
EPSS score — higher than 35% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Hp Debian Redhat Isc Canonical Netapp Opensuse

References (28)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00027.html
Third Party Advisory http://www.securityfocus.com/bid/105055
Third Party Advisory http://www.securitytracker.com/id/1041436
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2570
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2571
Vendor Advisory https://kb.isc.org/docs/aa-01639
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/08/msg00033.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html
Third Party Advisory https://security.gentoo.org/glsa/201903-13
Third Party Advisory https://security.netapp.com/advisory/ntap-20180926-0003/
Third Party Advisory https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpe...
Third Party Advisory https://usn.ubuntu.com/3769-1/
Third Party Advisory https://usn.ubuntu.com/3769-2/
Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00027.html
Third Party Advisory http://www.securityfocus.com/bid/105055
Third Party Advisory http://www.securitytracker.com/id/1041436
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2570
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2571
and 8 more references
65
/ 100
high-risk
Severity 26/34 · High
Exploitability 19/34 · Moderate
Exposure 20/34 · Moderate