Possible Buffer Overrun in smbd

Summary: A possible buffer overrun in smbd could
lead to code execution by a remote user

Patch Availability

A patch for Samba 3.0.7 (samba-3.0.7-CAN-2004-0882.patch) is
available from http://www.samba.org/samba/ftp/patches/security/.
The patch has been signed with the “Samba Distribution Verification
Key” (ID F17F9772).

Description

Invalid bounds checking in reply to certain trans2 requests
could result in a buffer overrun in smbd. In order to exploit
this defect, the attacker must be able to create files with very
specific Unicode filenames on the Samba share.

Protecting Unpatched Servers

The Samba Team always encourages users to run the latest stable
release as a defense of against attacks. However, under certain
circumstances it may not be possible to immediately upgrade
important installations. In such cases, administrators should
read the “Server Security” documentation found at
http://www.samba.org/samba/docs/server_security.html.

Credits

This security issue was reported to Samba developers by Stefan
Esser from e-matters Security (http://security.e-matters.de/).

– Our Code, Our Bugs, Our Responsibility.

		-- The Samba Team