CVE-2020-12662 Information

Description

Unbound before 1.10.1 has Insufficient Control of Network Message Volume aka an \NXNSAttack\ issue. This is triggered by random subdomains in the NSDNAME in NS records.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html http://www.nxnsattack.com http://www.openwall.com/lists/oss-security/2020/05/19/5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I/ https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt https://security.FreeBSD.org/advisories/FreeBSD-SA-20:19.unbound.asc https://security.netapp.com/advisory/ntap-20200702-0006/ https://usn.ubuntu.com/4374-1/ https://www.debian.org/security/2020/dsa-4694 https://www.synology.com/security/advisory/Synology_SA_20_12

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