CVE & CISA-KEV Catalog

CVE-2020-14383

MEDIUMEPSS 81th pctl
6.5
CVSS v3
NVD

Description

A flaw was found in samba's DNS server. An authenticated user could use this flaw to the RPC server to crash. This RPC server, which also serves protocols other than dnsserver, will be restarted after a short delay, but it is easy for an authenticated non administrative attacker to crash it again as soon as it returns. The Samba DNS server itself will continue to operate, but many RPC services will not.

CWE-391

How to fix

Remediation Available
sambaDebian
Fixed in:2:4.13.2+dfsg-2CVE-2020-14383
Fixed in:2:4.13.2+dfsg-2CVE-2020-14383
Fixed in:2:4.13.2+dfsg-2CVE-2020-14383
Fixed in:2:4.13.2+dfsg-2CVE-2020-14383
sambaUbuntu
Fixed in:2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11USN-4931-1
Fixed in:2:4.3.11+dfsg-0ubuntu0.16.04.32USN-4611-1
Fixed in:2:4.7.6+dfsg~ubuntu-0ubuntu2.21USN-4611-1
Fixed in:2:4.11.6+dfsg-0ubuntu1.6USN-4611-1

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

2.18%probability of exploitation in 30 days
81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Vendor Advisory1
Third-Party Advisory1
Other references1

Related Vulnerabilities

Other CWE-391 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-52316Critical9.86.3%-Fix
CVE-2017-12179Critical9.84.4%-Fix
CVE-2017-12177Critical9.84.4%-Fix
CVE-2017-12186Critical9.84.3%-Fix
CVE-2017-12183Critical9.84.2%-Fix
CVE-2017-12182Critical9.84.2%-Fix

Common questions

How do I fix CVE-2020-14383?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2020-14383 being actively exploited?

Not that we know of. CVE-2020-14383 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.2% is the estimated probability that it will be exploited in the next 30 days. That is higher than 81% of all scored CVEs.

How severe is CVE-2020-14383?

CVE-2020-14383 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2020-14383 affect?

Published advisories record a fix for samba (Debian), samba (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.