Debian DSA-4055-1 : heimdal - security update

Medium Nessus Plugin ID 105087


The remote Debian host is missing a security-related update.


Michael Eder and Thomas Kittel discovered that Heimdal, an implementation of Kerberos 5 that aims to be compatible with MIT Kerberos, did not correctly handle ASN.1 data. This would allow an unauthenticated remote attacker to cause a denial of service (crash of the KDC daemon) by sending maliciously crafted packets.


Upgrade the heimdal packages.

For the stable distribution (stretch), this problem has been fixed in version 7.1.0+dfsg-13+deb9u2.

See Also

Plugin Details

Severity: Medium

ID: 105087

File Name: debian_DSA-4055.nasl

Version: 3.5

Type: local

Agent: unix

Published: 2017/12/08

Updated: 2018/11/13

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:heimdal, cpe:/o:debian:debian_linux:9.0

Patch Publication Date: 2017/12/07

Reference Information

CVE: CVE-2017-17439

DSA: 4055