CVE & CISA-KEV Catalog

CVE-2019-12098

HIGHEPSS 78th pctl

7.4

CVSS v3

Description

In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5_init_creds_step in lib/krb5/init_creds_pw.c.

CWE-295Improper Certificate Validation

How to fix

Remediation Available

heimdalDebian

Fixed in:7.5.0+dfsg-3CVE-2019-12098

Fixed in:7.5.0+dfsg-3CVE-2019-12098

Fixed in:7.5.0+dfsg-3CVE-2019-12098

Fixed in:7.5.0+dfsg-3CVE-2019-12098

heimdalUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1USN-5675-1

Fixed in:7.5.0+dfsg-1ubuntu0.1USN-5675-1

Fixed in:7.7.0+dfsg-1ubuntu1.1USN-5675-1

heimdal-clientsUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1USN-5675-1

Fixed in:7.5.0+dfsg-1ubuntu0.1USN-5675-1

Fixed in:7.7.0+dfsg-1ubuntu1.1USN-5675-1

heimdal-clients-xUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

heimdal-kcmUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1USN-5675-1

Fixed in:7.5.0+dfsg-1ubuntu0.1USN-5675-1

Fixed in:7.7.0+dfsg-1ubuntu1.1USN-5675-1

heimdal-kdcUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1USN-5675-1

Fixed in:7.5.0+dfsg-1ubuntu0.1USN-5675-1

Fixed in:7.7.0+dfsg-1ubuntu1.1USN-5675-1

heimdal-serversUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1USN-5675-1

Fixed in:7.5.0+dfsg-1ubuntu0.1USN-5675-1

Fixed in:7.7.0+dfsg-1ubuntu1.1USN-5675-1

heimdal-servers-xUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

libgssapi3-heimdalUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1USN-5675-1

Fixed in:7.5.0+dfsg-1ubuntu0.1USN-5675-1

Fixed in:7.7.0+dfsg-1ubuntu1.1USN-5675-1

libkdc2-heimdalUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1USN-5675-1

Fixed in:7.5.0+dfsg-1ubuntu0.1USN-5675-1

Fixed in:7.7.0+dfsg-1ubuntu1.1USN-5675-1

libkrb5-26-heimdalUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm1USN-5675-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1USN-5675-1

Fixed in:7.5.0+dfsg-1ubuntu0.1USN-5675-1

Fixed in:7.7.0+dfsg-1ubuntu1.1USN-5675-1

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.98%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Patch3

Third-Party Advisory6

Other references2

Related Vulnerabilities

Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2020-0601	High	8.1	89%	KEV	Fix
CVE-2009-3555	Critical	9.8	87%	-	Fix
CVE-2022-26923	High	8.8	83%	KEV	Fix
CVE-2023-27823	Critical	9.8	53%	-	-
CVE-2022-42979	High	8.8	24%	-	-

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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 2026-04-15.