RHEL 2.1 / 3 / 4 : telnet (RHSA-2005:327)

high Nessus Plugin ID 17645

Synopsis

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

Description

Updated telnet packages that fix two buffer overflow vulnerabilities are now available.

This update has been rated as having important security impact by the Red Hat Security Response Team.

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 CVE-2005-0468 and CVE-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.

Solution

Update the affected telnet and / or telnet-server packages.

See Also

https://access.redhat.com/security/cve/cve-2005-0468

https://access.redhat.com/security/cve/cve-2005-0469

http://www.nessus.org/u?69f65c02

http://www.nessus.org/u?0f2f4fd7

https://access.redhat.com/errata/RHSA-2005:327

Plugin Details

Severity: High

ID: 17645

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

Version: 1.28

Type: local

Agent: unix

Published: 3/29/2005

Updated: 1/14/2021

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

CVSS v2

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:telnet, p-cpe:/a:redhat:enterprise_linux:telnet-server, cpe:/o:redhat:enterprise_linux:2.1, cpe:/o:redhat:enterprise_linux:3, 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