CVE-2018-5737 Information

Description

A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c even when stale-answer-enable is off. Additionally problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation – either degradation or denial of service. Affects BIND 9.12.0 and 9.12.1.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/104236 http://www.securitytracker.com/id/1040942 https://kb.isc.org/docs/aa-01606 https://security.netapp.com/advisory/ntap-20180926-0004/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5