Executive Summary

Titleheimdal security update
NameDSA-4455First vendor Publication2019-06-03
VendorDebianLast vendor Modification2019-06-03
Severity (Vendor) N/ARevision1

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:N)
Cvss Base Score5.8Attack RangeNetwork
Cvss Impact Score4.9Attack ComplexityMedium
Cvss Expoit Score8.6AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores


Several vulnerabilities were discovered in Heimdal, an implementation of Kerberos 5 that aims to be compatible with MIT Kerberos.


Isaac Boukris and Andrew Bartlett discovered that Heimdal was susceptible to man-in-the-middle attacks caused by incomplete checksum validation. Details on the issue can be found in the Samba advisory at https://www.samba.org/samba/security/CVE-2018-16860.html


It was discovered that failure of verification of the PA-PKINIT-KX key exchange client-side could permit to perform man-in-the-middle attack.

For the stable distribution (stretch), these problems have been fixed in version 7.1.0+dfsg-13+deb9u3.

We recommend that you upgrade your heimdal packages.

For the detailed security status of heimdal please refer to its security tracker page at: https://security-tracker.debian.org/tracker/heimdal

Original Source

Url : http://www.debian.org/security/2019/dsa-4455

CWE : Common Weakness Enumeration

100 %CWE-320Key Management Errors

CPE : Common Platform Enumeration


Alert History

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2019-06-04 00:18:22
  • First insertion