BSD Based telnetd telrcv Function Remote Command Execution

Critical Nessus Plugin ID 10709


The remote telnet server may be vulnerable to a buffer overflow attack.


The Telnet server does not return an expected number of replies when it receives a long sequence of 'Are You There' commands. This probably means it overflows one of its internal buffers and crashes. This could likely lead to arbitrary code execution.


Disable the telnet service by, for example, commenting out the 'telnet' line in /etc/inetd.conf.

Plugin Details

Severity: Critical

ID: 10709

File Name: teso_telnet.nasl

Version: $Revision: 1.33 $

Type: remote

Published: 2001/07/24

Modified: 2011/08/08

Dependencies: 11314, 17975

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 8.3

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2001/07/18

Reference Information

CVE: CVE-2001-0554

BID: 3064

OSVDB: 809