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CVE-2020-10772

Published: 27 November 2020

An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of erratum RHSA-2020:2414. Vulnerable versions of Unbound could still amplify an incoming query into a large number of queries directed to a target, even with a lower amplification ratio compared to versions of Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix for CVE-2020-12662, and it does not affect upstream versions of Unbound.

Notes

AuthorNote
mdeslaur
this is an issue in a Red Hat backport

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
unbound
Launchpad, Ubuntu, Debian
bionic Not vulnerable

eoan Not vulnerable

focal Not vulnerable

trusty Not vulnerable

upstream Not vulnerable
(debian: Red Hat specific regression in backport)
xenial Not vulnerable

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H