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Category:   Application (VPN)  >   OpenSSH Vendors:   OpenSSH.org
OpenSSH Lets Local Users Hijack Forwarded X Sessions in Certain Cases
SecurityTracker Alert ID:  1019707
SecurityTracker URL:  http://securitytracker.com/id/1019707
CVE Reference:   CVE-2008-1483   (Links to External Site)
Date:  Mar 26 2008
Impact:   User access via local system
Exploit Included:  Yes  
Version(s): 4.3p2, possibly other versions
Description:   A vulnerability was reported in OpenSSH. A local user can hijack a target user's X session.

If the specified X11 forwarding port is in use via IPv4 but not in use by IPv6, the server does not properly select a different port. A local user can hijack forwarded X connections.

Timo Juhani Lindfors reported this vulnerability.

Impact:   A local user can hijack forwarded X connections.
Solution:   No solution was available at the time of this entry.
Vendor URL:  www.openssh.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Apr 17 2008 (FreeBSD Issues Fix) OpenSSH Lets Local Users Hijack Forwarded X Sessions in Certain Cases
FreeBSD has released a fix for FreeBSD 5.5, 6.1, 6.2, 6.3, 7.0, and 7.1.
Apr 22 2008 (NetBSD Issues Fix) OpenSSH Lets Local Users Hijack Forwarded X Sessions in Certain Cases
NetBSD has released a fix for NetBSD 3.0, 3.1, and 4.0.
May 7 2008 (Sun Solaris is Affected) OpenSSH Lets Local Users Hijack Forwarded X Sessions in Certain Cases
Sun is working on a fix for Solaris 9 and 10.
May 22 2008 (IBM Issues Fix) OpenSSH Lets Local Users Hijack Forwarded X Sessions in Certain Cases
IBM has issued a fix for AIX 5.2, 5.3, and 6.1.
May 22 2008 (HP Issues Fix for HP-UX) OpenSSH Lets Local Users Hijack Forwarded X Sessions in Certain Cases
HP has issued a fix for HP-UX 11.11, 11.23, and 11.31.



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