XFree86 xdm brute force cookie attack
| xdm-cookie-brute-force (6808) |  Medium Risk |
Description:
The XFree86 xdm (X Display Manager) could allow an attacker to gain unauthorized access. A vulnerability in the gettimeofday function could allow a remote attacker to launch a brute force attack when xdm is compiled without the WrapHelp.c program. An attacker could use this vulnerability to gain unauthorized access to the X display.
Platforms Affected:
- XFree86, XFree86 X11R6 3.3
- XFree86, XFree86 X11R6 3.3.3
Remedy:
No remedy available as of June 27, 2009.
Consequences:
Gain Access
References:
- BugTraq Mailing List, Fri Jul 06 2001 - 08:25:30 CDT, multiple vendors XDM mis-compilation [Was: xdm cookies fast brute force] at http://archives.neohapsis.com/archives/bugtraq/2001-07/0101.html.
- BugTraq Mailing List, Thu Jul 05 2001 - 09:14:30 CDT, Re: xdm cookies fast brute force at http://archives.neohapsis.com/archives/bugtraq/2001-07/0075.html.
- BugTraq Mailing List, Thu Jul 05 2001 - 10:12:42 CDT, Re: xdm cookies fast brute force at http://archives.neohapsis.com/archives/bugtraq/2001-07/0074.html.
- BugTraq Mailing List, Wed Jul 04 2001 - 01:52:09 CDT, xdm cookies fast brute force at http://archives.neohapsis.com/archives/bugtraq/2001-07/0065.html.
- BID-2985: XDM Session Cookie Guessing Vulnerability
- CVE-2001-1086: XDM in XFree86 3.3 and 3.3.3 generates easily guessable cookies using gettimeofday() when compiled with the HasXdmXauth option, which allows remote attackers to gain unauthorized access to the X display via a brute force attack.
Reported:
Jul 04, 2001
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