Bug 161337

Summary: CAN-2001-1494 hardlink vulnerability in 'script' command
Product: Red Hat Enterprise Linux 2.1 Reporter: Josh Bressers <bressers>
Component: util-linuxAssignee: Karel Zak <kzak>
Status: CLOSED ERRATA QA Contact: Ben Levenson <benl>
Severity: low Docs Contact:
Priority: medium    
Version: 2.1CC: mjc
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: public=20011212,impact=low,source=cve,reported=20050621
Fixed In Version: RHSA-2005-782 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-10-11 15:48:04 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 2005-06-22 15:10:19 UTC 
Very simple, script (when executed as root) overwrites
hardlinks that could be set by any user to any file on
the harddisk. For instance, a malicious user can place
a hardlink 'typescript' to /etc/passwd (or any other file)
in his home directory. If the root user would execute
script in that directory it would cause script to
overwrite that file. Script does check for symlinks and
asks if the symlink should be overwritten, it lacks
checking hardlinks. 

http://archives.neohapsis.com/archives/bugtraq/2001-12/0119.html
Comment 5 Red Hat Bugzilla 2005-10-11 15:48:04 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