CVE & CISA-KEV Catalog

CVE-2019-3836

MEDIUMEPSS 88th pctl
5.9
CVSS v3
NVD

Description

It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versions 3.6.3 or later which can be triggered by certain post-handshake messages.

CWE-456CWE-824

How to fix

Remediation Available
gnutls28Debian
Fixed in:3.6.7-2CVE-2019-3836
Fixed in:3.6.7-2CVE-2019-3836
Fixed in:3.6.7-2CVE-2019-3836
Fixed in:3.6.7-2CVE-2019-3836
gnutls28Ubuntu
Fixed in:3.4.10-4ubuntu1.5USN-3999-1
Fixed in:3.5.18-1ubuntu1.1USN-3999-1
libgnutls30Ubuntu
Fixed in:3.4.10-4ubuntu1.5USN-3999-1
Fixed in:3.5.18-1ubuntu1.1USN-3999-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

3.40%probability of exploitation in 30 days
88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Exploit1

Related Vulnerabilities

Other CWE-456 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2018-14641Medium6.52.9%--
CVE-2021-34703Medium6.81.2%--
CVE-2021-40403Medium6.31.1%-Fix
CVE-2023-20226High8.60.7%--
CVE-2024-32878High7.10.7%-Fix
CVE-2024-9780High7.80.2%-Fix

Common questions

How do I fix CVE-2019-3836?

Published advisories record a fix for 3 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-2019-3836 being actively exploited?

Not that we know of. CVE-2019-3836 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 3.4% is the estimated probability that it will be exploited in the next 30 days. That is higher than 88% of all scored CVEs.

How severe is CVE-2019-3836?

CVE-2019-3836 has a CVSS v3 base score of 5.9, 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-2019-3836 affect?

Published advisories record a fix for gnutls28 (Debian), gnutls28 (Ubuntu), libgnutls30 (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.