RHEL 4 : telnet (RHSA-2005:327)

critical Nessus Plugin ID 17645

Synopsis

The remote Red Hat host is missing one or more security updates for telnet.

Description

The remote Redhat Enterprise Linux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2005:327 advisory.

The telnet package provides a command line telnet client. The telnet-server package includes a telnet daemon, telnetd, that supports remote login to the host machine.

Two buffer overflow flaws were discovered in the way the telnet client handles messages from a server. An attacker may be able to execute arbitrary code on a victim's machine if the victim can be tricked into connecting to a malicious telnet server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CAN-2005-0468 and CAN-2005-0469 to these issues.

Additionally, the following bugs have been fixed in these erratum packages for Red Hat Enterprise Linux 2.1 and Red Hat Enterprise Linux 3:

- telnetd could loop on an error in the child side process

- There was a race condition in telnetd on a wtmp lock on some occasions

- The command line in the process table was sometimes too long and caused bad output from the ps command

- The 8-bit binary option was not working

Users of telnet should upgrade to this updated package, which contains backported patches to correct these issues.

Red Hat would like to thank iDEFENSE for their responsible disclosure of this issue.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL telnet package based on the guidance in RHSA-2005:327.

Plugin Details

Severity: Critical

ID: 17645

File Name: redhat-RHSA-2005-327.nasl

Version: 1.30

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 3/29/2005

Updated: 11/4/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2005-0469

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2005-0468

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:3, p-cpe:/a:redhat:enterprise_linux:telnet-server, p-cpe:/a:redhat:enterprise_linux:telnet, cpe:/o:redhat:enterprise_linux:4

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Patch Publication Date: 3/28/2005

Vulnerability Publication Date: 5/2/2005

Reference Information

CVE: CVE-2005-0468, CVE-2005-0469

RHSA: 2005:327

Detections

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