CVE-2019-12098 | Vulnerability Database | Aqua Security

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.

Affected Software

Name	Vendor	Start Version	End Version
Heimdal	Heimdal_project	*	7.6.0 (excluding)
Heimdal	Ubuntu	bionic	*
Heimdal	Ubuntu	cosmic	*
Heimdal	Ubuntu	disco	*
Heimdal	Ubuntu	esm-infra/xenial	*
Heimdal	Ubuntu	precise/esm	*
Heimdal	Ubuntu	trusty	*
Heimdal	Ubuntu	trusty/esm	*
Heimdal	Ubuntu	upstream	*
Heimdal	Ubuntu	xenial	*

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00026.html
http://www.h5l.org/pipermail/heimdal-announce/2019-May/000009.html
https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cf
https://github.com/heimdal/heimdal/compare/3e58559...bbafe72
https://github.com/heimdal/heimdal/releases/tag/heimdal-7.6.0
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GIXEDVVMPD6ZAJSMI2EZ7FNEIVNWE5PD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SLXXIF4LOQEAEDAF4UGP2AO6WDNTDFUB/
https://seclists.org/bugtraq/2019/Jun/1
https://www.debian.org/security/2019/dsa-4455

NVD	https://nvd.nist.gov/vuln/detail/CVE-2019-12098
CWE	https://cwe.mitre.org/data/definitions/.html