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Category:   Application (Security)  >   OpenSSH Vendors:   OpenSSH.org
(OpenBSD Issues Fix) OpenSSH scp Double Shell Character Expansion During Local-to-Local Copying May Let Local Users Gain Elevated Privileges in Certain Cases
SecurityTracker Alert ID:  1015614
SecurityTracker URL:  http://securitytracker.com/id/1015614
CVE Reference:   CVE-2006-0225   (Links to External Site)
Date:  Feb 13 2006
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in scp in OpenSSH. A local user may be able to obtain elevated privileges in certain cases.

When performing local-to-local copying functions, scp expands shell characters in the filename twice before making a system() call. A filename that contains specially crafted characters may cause arbitrary commands to be executed.

If scp is used to transfer untrusted files or directories, a local user may be able to cause arbitrary code to be executed with the privileges of the process running scp.

The original bug report is available at:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=174026

Impact:   A local user may be able to obtain elevated privileges in certain cases.
Solution:   OpenBSD has issued a fix.

ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.7/common/011_ssh.patch
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.8/common/005_ssh.patch

Vendor URL:  www.openssh.org/ (Links to External Site)
Cause:   State error
Underlying OS:  UNIX (OpenBSD)
Underlying OS Comments:  3.7, 3.8

Message History:   This archive entry is a follow-up to the message listed below.
Jan 25 2006 OpenSSH scp Double Shell Character Expansion During Local-to-Local Copying May Let Local Users Gain Elevated Privileges in Certain Cases



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