BNC IRC Server Incorrect Password Authentication Bypass

High Nessus Plugin ID 15703


The remote IRC proxy is susceptible to an authentication bypass issue.


The remote host is running a version of the BNC IRC proxy that contains a flaw in its authentication process that accepted only logins with incorrect passwords. An attacker may use this issue to gain access to the remote IRC proxy server.


Upgrade to BNC version 2.9.1 or later.

See Also

Plugin Details

Severity: High

ID: 15703

File Name: bnc_auth_bypass.nasl

Version: $Revision: 1.15 $

Type: remote

Family: Misc.

Published: 2004/11/13

Modified: 2015/12/23

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Excluded KB Items: global_settings/supplied_logins_only

Exploit Available: true

Exploit Ease: No exploit is required

Vulnerability Publication Date: 2004/11/26

Reference Information

CVE: CVE-2004-2612

BID: 11650

OSVDB: 12144