CVE-2018-5740

MEDIUM

Description

"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.

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00027.html

http://www.securityfocus.com/bid/105055

http://www.securitytracker.com/id/1041436

https://access.redhat.com/errata/RHSA-2018:2570

https://access.redhat.com/errata/RHSA-2018:2571

https://kb.isc.org/docs/aa-01639

https://lists.debian.org/debian-lts-announce/2018/08/msg00033.html

https://security.gentoo.org/glsa/201903-13

https://security.netapp.com/advisory/ntap-20180926-0003/

https://usn.ubuntu.com/3769-1/

https://usn.ubuntu.com/3769-2/

Details

Source: MITRE

Published: 2019-01-16

Updated: 2019-06-10

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH