Debian DSA-4055-1 : heimdal - security update

Medium Nessus Plugin ID 105087

Synopsis

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

Description

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.

Solution

Upgrade the heimdal packages.

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

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878144

https://security-tracker.debian.org/tracker/source-package/heimdal

https://packages.debian.org/source/stretch/heimdal

https://www.debian.org/security/2017/dsa-4055

Plugin Details

Severity: Medium

ID: 105087

File Name: debian_DSA-4055.nasl

Version: 3.5

Type: local

Agent: unix

Published: 2017/12/08

Modified: 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

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 2017/12/07

Reference Information

CVE: CVE-2017-17439

DSA: 4055