Bug 168206

Summary: CAN-2005-2876 umount unsafe -r usage
Product: Red Hat Enterprise Linux 4 Reporter: Josh Bressers <bressers>
Component: util-linuxAssignee: Karel Zak <kzak>
Status: CLOSED ERRATA QA Contact: Ben Levenson <benl>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0Keywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,public=20050913,source=bugtraq
Fixed In Version: RHSA-2005-782 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-10-11 15:48:12 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:

Description Josh Bressers 2005-09-13 15:20:17 UTC 
This issue was reported to bugtraq here:
http://marc.theaimsgroup.com/?l=bugtraq&m=112656096125857&w=2

The issue is that if a non root user is able to run umount -r, it is possible to
subvert the restrictions placed on a filesystem such as nosuid.
Comment 3 Red Hat Bugzilla 2005-10-11 15:48:12 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-2005-782.html