HTTP "dot dot" sequences
| http-dotdot (106) |  Medium Risk |
Description:
An attacker can traverse directories on vulnerable Web servers by using "dot dot" (/../) sequences in URLs, allowing the attacker to read any file on the target HTTP server that is world-readable or readable by the ID of the HTTP process. For example, a URL of the form (http://www.domain.com/..\..) allows anyone to browse and download files outside of the Web server content root directory. URLs such as (http://www.domain.com/scripts..\..\) script-name could allow an attacker to execute the target script. An attacker can use a listing of this directory as additional information for planning a structured attack, or could download files elsewhere in the file system.
Consequences:
Obtain Information
Remedy:
Check with the vendor and documentation of your Web server software for information on configuring your server to remove this vulnerability.
— OR —
Upgrade to the latest version of your Web server software. Contact your vendor for more information.
References:
- IBM Internet Security Systems X-Force Database: IIS crashes processing some GET commands.
- CVE-1999-0229: Denial of service in Windows NT IIS server using ..\..
Platforms Affected:
- Apple Mac OS
- Cisco IOS
- Compaq Tru64
- Data General DG/UX
- IBM AIX
- IBM OS2
- Linux Kernel
- Microsoft Windows 2000
- Microsoft Windows 2003 Server
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows 98SE
- Microsoft Windows Me
- Microsoft Windows NT 4.0
- Microsoft Windows XP
- Novell NetWare
- SCO SCO Unix
- SGI IRIX
- Sun Solaris
- Various vendors Any Web server
- WindRiver BSDOS
- HP-UX
Reported:
Not available
The information within this database 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 (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net