SurgeFTP PASV指令拒绝服务漏洞

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漏洞ID 1189831 漏洞类型 未知
发布时间 2007-07-15 更新时间 2007-07-15
CVE编号 CVE-2007-3768 CNNVD-ID CNNVD-200707-244
漏洞平台 N/A CVSS评分 8.5
|漏洞来源
https://www.securityfocus.com/bid/85594
https://cxsecurity.com/issue/WLB-2007070038
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-200707-244
|漏洞详情
SurgeFTP2.3a1版本的镜像机制允许用户协助式的远程FTP服务期可以借助一个畸形的对一个PASV指令的响应,造成拒绝服务(重启)。
|漏洞EXP
Portcullis Security Advisory 06-061

Vulnerable System:

SurgeFTP


Vulnerability Title:

The mirror mechanism allows Denial of Service.


Vulnerability discovery and development:

Portcullis Security Testing Services discovered this vulnerability.  
Further research was then carried out.


Credit for Discovery:

Nico Leidecker - Portcullis Computer Security Ltd.


Affected systems: 

Version 2.3a1 Linux and is likely to affect other platforms.


Details:

SurgeFTP provides a mirror functionality but fails to detect malformated 
command responses.  This concerns the PASV command and its response from the 
mirrored server. SurgeFTP fails to parse a response to PASV properly so that
it will crash if the response was malformated.


Impact:

It may be possible for an attacker to shut down the service. By default, 
SurgeFTP respawns after a couple of seconds. But then, immediately reconnects 
to the mirrored server. As long as the attacker keeps sending malformated 
PASV responses to the server, it will keep shutting down immediately after 
restarting.


Exploit:

The proof of concept exploit code is available.


Vendor Status:

Vendor notified. The vulnerability has been fixed.


Copyright: 

Copyright ? Portcullis Computer Security Limited 2005, All rights reserved 
worldwide. 

Permission is hereby granted for the electronic redistribution of this 
information. It is not to be edited or altered in any way without the express 
written consent of Portcullis Computer Security Limited.


Disclaimer:

The information herein contained may change without notice. Use of this 
information constitutes acceptance for use in an AS IS condition. There are NO 
warranties, implied or otherwise, with regard to this information or its use. 
Any use of this information is at the user's risk. In no event shall the 
author/distributor (Portcullis Computer Security Limited) be held liable for 
any damages whatsoever arising out of or in connection with the use or spread 
of this information.
|受影响的产品
NetWin SurgeFTP 2.3a1
|参考资料

来源:SECUNIA
名称:26061
链接:http://secunia.com/advisories/26061
来源:XF
名称:surgeftp-pasv-dos(35376)
链接:http://xforce.iss.net/xforce/xfdb/35376
来源:VUPEN
名称:ADV-2007-2528
链接:http://www.frsirt.com/english/advisories/2007/2528
来源:OSVDB
名称:37909
链接:http://osvdb.org/37909
来源:FULLDISC
名称:20070710PortcullisComputerSecurityLtd-Advisories
链接:http://marc.info/?l=full-disclosure&m=118409539009277&w=2
来源:MISC
链接:http://lists.grok.org.uk/pipermail/full-disclosure/attachments/20070710/98374694/attachment-0030.txt
来源:SREASON
名称:2883
链接:http://securityreason.com/securityalert/2883