CVE-2020-14303

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 18.72% Top 10%
Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory samba.org
Affected: n/a Samba
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1851298%3B
https://www.samba.org/samba/security/CVE-2020-14303.html vendor advisory
https://security.netapp.com/advisory/ntap-20200709-0003/ third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YLNQ5GRXUKYRUAOFZ4DUBVN4SMTL6Q2/ vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00030.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html mailing list third party advisory vendor advisory
https://security.gentoo.org/glsa/202007-15 third party advisory vendor advisory
https://usn.ubuntu.com/4454-2/ third party advisory vendor advisory
https://usn.ubuntu.com/4454-1/ third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html mailing list third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-14303?
CVE-2020-14303 has been scored as a high severity vulnerability.
How to fix CVE-2020-14303?
To fix CVE-2020-14303, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-14303 being actively exploited in the wild?
It is possible that CVE-2020-14303 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~19% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-14303?
CVE-2020-14303 affects n/a Samba.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.