Ubuntu 4.10 / 5.04 / 5.10 : heimdal vulnerability (USN-253-1)

high Nessus Plugin ID 21061

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

A remote Denial of Service vulnerability was discovered in the heimdal implementation of the telnet daemon. A remote attacker could force the server to crash due to a NULL de-reference before the user logged in, resulting in inetd turning telnetd off because it forked too fast.

Please note that the heimdal-servers package is not officially supported in Ubuntu (it is in the 'universe' component of the archive). However, this affects you if you use a customized version built from the heimdal source package (which is supported).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 21061

File Name: ubuntu_USN-253-1.nasl

Version: 1.14

Type: local

Agent: unix

Family: Ubuntu Local Security Checks

Published: 3/13/2006

Updated: 1/19/2021

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:heimdal-clients, p-cpe:/a:canonical:ubuntu_linux:heimdal-clients-x, p-cpe:/a:canonical:ubuntu_linux:heimdal-dev, p-cpe:/a:canonical:ubuntu_linux:heimdal-docs, p-cpe:/a:canonical:ubuntu_linux:heimdal-kdc, p-cpe:/a:canonical:ubuntu_linux:heimdal-servers, p-cpe:/a:canonical:ubuntu_linux:heimdal-servers-x, p-cpe:/a:canonical:ubuntu_linux:libasn1-6-heimdal, p-cpe:/a:canonical:ubuntu_linux:libgssapi1-heimdal, p-cpe:/a:canonical:ubuntu_linux:libhdb7-heimdal, p-cpe:/a:canonical:ubuntu_linux:libkadm5clnt4-heimdal, p-cpe:/a:canonical:ubuntu_linux:libkadm5srv7-heimdal, p-cpe:/a:canonical:ubuntu_linux:libkafs0-heimdal, p-cpe:/a:canonical:ubuntu_linux:libkrb5-17-heimdal, cpe:/o:canonical:ubuntu_linux:4.10, cpe:/o:canonical:ubuntu_linux:5.04, cpe:/o:canonical:ubuntu_linux:5.10

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

Patch Publication Date: 2/17/2006

Vulnerability Publication Date: 2/6/2006

Reference Information

CVE: CVE-2006-0677

USN: 253-1

Detections

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