Security readout for executives and security teams
This flaw affects Heimdal Kerberos clients before 7.6.0. A client may fail to verify part of an anonymous PKINIT key exchange, allowing a capable network man-in-the-middle to compromise confidentiality and integrity during authentication-related traffic. Exposure is most likely on systems using Heimdal Kerberos client libraries or packages before Heimdal 7.6.0, including affected downstream Debian, openSUSE, and Fedora packages noted in advisories. The source bundle does not enumerate specific CPEs or product deployments. Treat as a high-priority authentication stack update, especially for environments relying on Kerberos across less trusted networks. It is not evidenced as actively exploited in the bundle, so prioritize remediation through normal urgent patching rather than emergency incident response. Mitigation focus: Upgrade Heimdal clients to version 7.6.0 or later.; Apply fixed Heimdal packages from Debian, openSUSE, or Fedora advisories.; Prioritize authentication clients on shared or untrusted network paths..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2019-12098 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N2.25.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.4HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/heimdal/heimdal/releases/tag/heimdal-7.6.0CVE reference · x_refsource_MISC
- https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cfCVE reference · x_refsource_CONFIRM
- https://github.com/heimdal/heimdal/compare/3e58559...bbafe72CVE reference · x_refsource_MISC
- 20190603 [SECURITY] [DSA 4455-1] heimdal security updateCVE reference · mailing-list, x_refsource_BUGTRAQ
- DSA-4455CVE reference · vendor-advisory, x_refsource_DEBIAN
- FEDORA-2019-f3046b6bfbCVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2019-2fa7d6405bCVE reference · vendor-advisory, x_refsource_FEDORA
Products and packages named in the record
CWE details
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CWE mapping pending import
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