CVE-2020-14303: 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

High severity · published Jul 6, 2020

CVE-2020-14303

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

7.5

CVSS

3.5%

EPSS

On KEV

Description

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.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)3.5% · higher than 89% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Debian Linux · Debian

9.0 · source: NVD

Fedora · Fedoraproject

31 · source: NVD

Leap · Opensuse

15.1; 15.2 · source: NVD

Samba · Samba

4.10.0 before 4.10.17; 4.11.0 before 4.11.11; 4.12.0 before 4.12.4 · source: NVD

Ubuntu Linux · Canonical

12.04; 14.04; 16.04; 18.04; 20.04 · source: NVD

Affected product

Ubuntu Linux

Canonical

All Ubuntu Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-14303

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-14303

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00030.html

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html

bugzilla.redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=1851298%3B

Mailing List

https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YLNQ5GRXUKYRUAOFZ4DUBVN4SMTL6Q2/