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CVE-2020-14303

Published: 6 July 2020

A flaw was found in the AD DC NBT server in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4. A samba user could send an empty UDP packet to cause the samba server to crash.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
samba
Launchpad, Ubuntu, Debian
eoan Ignored
(end of life)
trusty
Released (2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (2:4.3.11+dfsg-0ubuntu0.16.04.29)
bionic
Released (2:4.7.6+dfsg~ubuntu-0ubuntu2.18)
focal
Released (2:4.11.6+dfsg-0ubuntu1.4)
upstream Needs triage

Patches:
upstream: https://github.com/samba-team/samba/commit/3cc0f1eeda5f133532dda31eef9fc1b394127e50

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