Unpassworded 'bash' Backdoor Account

Critical Nessus Plugin ID 15583


The remote host has an account with a blank password.


The account 'bash' has no password set. An attacker may use it to gain further privileges on this system.

This account was likely created by a backdoor installed by a fake Linux RedHat patch.


Disable this account and check your system.

See Also


Plugin Details

Severity: Critical

ID: 15583

File Name: account_bash.nasl

Version: $Revision: 1.26 $

Type: remote

Family: Backdoors

Published: 2004/10/30

Modified: 2017/11/20

Dependencies: 55900, 10267, 17975

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 8.6

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

Temporal Vector: CVSS2#E:F/RL:TF/RC:ND


Base Score: 9.8

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

Vulnerability Information

Excluded KB Items: global_settings/supplied_logins_only

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2001/01/01

Exploitable With

Metasploit (SSH User Code Execution)

Reference Information

CVE: CVE-1999-0502

OSVDB: 822