Is CVE-2019-14870 in the CISA KEV catalog?

No. CVE-2019-14870 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-14870?

CVE-2019-14870 has a CVSS v3 base score of 5.4 (MEDIUM).

What is the EPSS score for CVE-2019-14870?

CVE-2019-14870 has an EPSS score of 2.78% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-14870?

Upgrade heimdal on debian 11 to 7.7.0+dfsg-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2019-14870

MEDIUMEPSS 85th pctl

5.4

CVSS v3

NVD

Description

All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.

CWE-285 CWE-287Improper Authentication

How to fix

Remediation Available

heimdalDebian

Fixed in:7.7.0+dfsg-1CVE-2019-14870

libsmbclientUbuntu

Fixed in:2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4USN-4217-2

Fixed in:2:4.3.11+dfsg-0ubuntu0.16.04.24USN-4217-1

Fixed in:2:4.7.6+dfsg~ubuntu-0ubuntu2.14USN-4217-1

sambaUbuntu

Fixed in:2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4USN-4217-2

Fixed in:2:4.3.11+dfsg-0ubuntu0.16.04.24USN-4217-1

Fixed in:2:4.7.6+dfsg~ubuntu-0ubuntu2.14USN-4217-1

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

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

2.78%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Vendor Advisory1

samba.org

Third-Party Advisory9

Other references4

Embed a live status badge for CVE-2019-14870

Markdown

[![CVE-2019-14870](https://tridentstack.com/cve/badge/CVE-2019-14870.svg)](https://tridentstack.com/cve/CVE-2019-14870)

HTML

<a href="https://tridentstack.com/cve/CVE-2019-14870"><img src="https://tridentstack.com/cve/badge/CVE-2019-14870.svg" alt="CVE-2019-14870"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.