Bug 189436

Summary: CVE-2006-1864 smbfs chroot issue
Product: Red Hat Enterprise Linux 3 Reporter: Marcel Holtmann <holtmann>
Component: kernelAssignee: Peter Staubach <staubach>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 3.0CC: dhoward, lwang, petrides, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,source=secalert,reported=20060417,embargo=20060426,public=20060426
Fixed In Version: RHSA-2006-0710 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-10-19 12:40:58 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
Proposed patch none

Description Marcel Holtmann 2006-04-19 22:51:47 UTC 
When doing a chroot inside of a smb-mounted filesystem (smbfs), it appears that
you can break out of it using "cd ..\\" (2 backslashes).

[root@server me]# pwd
/path/to/my/dir
[root@server me]# ls
bin  chroot  etc  lib
[root@server me]# chroot .
bash-2.05a# pwd
/
bash-2.05a# ls
bin  chroot  etc  lib
bash-2.05a# cd ..\\
bash-2.05a# pwd
/..\
bash-2.05a# ls
<list of files from parent>
Comment 2 Peter Staubach 2006-05-09 20:22:20 UTC 
Created attachment 128811 [details]
Proposed patch
Comment 9 Ernie Petrides 2006-09-23 01:08:26 UTC 
A fix for this problem has just been committed to the RHEL3 U9
patch pool this evening (in kernel version 2.4.21-47.1.EL).
Comment 10 Ernie Petrides 2006-10-13 21:51:43 UTC 
A fix for this problem has also been committed to the RHEL3 E9
patch pool this evening (in kernel version 2.4.21-47.0.1.EL).
Comment 13 Red Hat Bugzilla 2006-10-19 12:40:58 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2006-0710.html