Vulnerability CVE-2019-12098
Published: 2019-05-15   Modified: 2019-05-16

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.

Type:

CWE-320

 (Key Management Errors)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.8/10
4.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Heimdal project -> Heimdal 

 References:
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://seclists.org/bugtraq/2019/Jun/1
https://www.debian.org/security/2019/dsa-4455
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