Unreal IRCD OperServ Raw Message Channel Join DoS

high Nessus Network Monitor Plugin ID 2154
New! Plugin Severity Now Using CVSS v3

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The remote host is vulnerable to a Denial of Service (DoS) attack.


The remote host is running a version of Unreal IRCD that is vulnerable to a remote denial of service. It is reported that Unreal IRCD may crash when a client sends a raw message to OperServ to join a channel. An attacker may use this issue to deny service to legitimate users.


Upgrade or patch according to vendor recommendations.

Plugin Details

Severity: High

ID: 2154

Family: IRC Servers

Published: 8/18/2004

Updated: 3/6/2019

Risk Information


Risk Factor: High

Base Score: 7.8

Temporal Score: 7.4

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

Temporal Vector: CVSS2#E:H/RL:W/RC:ND


Risk Factor: High

Base Score: 7.5

Temporal Score: 7.3

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

Temporal Vector: CVSS:3.0/E:H/RL:W/RC:X

Reference Information

BID: 8131