MS03-012: Microsoft ISA Server Winsock Proxy DoS (331066)

High Nessus Plugin ID 11534


It is possible to launch a denial of service attack against the remote proxy server.


A vulnerability in Microsoft Proxy Server 2.0 and ISA Server 2000 allows an attacker to cause a denial of service of the remote Winsock proxy service by sending a specially crafted packet that would cause 100% CPU utilization on the remote host and make it unresponsive.


Microsoft has released a set of patches for ISA Server 2000.

See Also

Plugin Details

Severity: High

ID: 11534

File Name: smb_nt_ms03-012.nasl

Version: $Revision: 1.37 $

Type: local

Agent: windows

Published: 2003/04/13

Modified: 2017/05/25

Dependencies: 57033, 13855

Risk Information

Risk Factor: High


Base Score: 7.8

Temporal Score: 5.8

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

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


Base Score: 7.5

Temporal Score: 6.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2003/04/09

Vulnerability Publication Date: 2003/04/09

Reference Information

CVE: CVE-2003-0110

BID: 7314

OSVDB: 6967

MSFT: MS03-012

MSKB: 331066