SystemTap File Validation Race Condition Lets Local Users Gain Elevated Privileges
|
|
SecurityTracker Alert ID: 1021922 |
|
SecurityTracker URL: http://securitytracker.com/id/1021922
|
|
CVE Reference:
CVE-2009-0784
(Links to External Site)
|
Date: Mar 26 2009
|
Impact:
Execution of arbitrary code via local system, Root access via local system
|
Fix Available: Yes Vendor Confirmed: Yes Exploit Included: Yes
|
Version(s): prior to 25 Mar 2009
|
Description:
A vulnerability was reported in SystemTap. A local user can obtain elevated privileges on the target system.
A local user with 'stapusr' group privileges can exploit a race condition to gain privileges of the 'stapdev' group. This allows the local user to obtain root privileges.
The vulnerability occurs because a checkpath() function validates kernel object paths but later opens the file without validating that the file is located within the required root-owned directory.
Erik Sjolund reported this vulnerability.
|
Impact:
A local user can obtain root privileges on the target system.
|
Solution:
The vendor has issued a source code fix, available at:
http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commitdiff;h=b41a544e20a42413daa0323d2f149e9e34586ccf
|
Vendor URL: sourceware.org/systemtap/ (Links to External Site)
|
Cause:
State error
|
Underlying OS:
Linux (Any)
|
|
Message History:
This archive entry has one or more follow-up message(s) listed below.
|
Source Message Contents
|
Date: Thu, 26 Mar 2009 14:02:34 -0500
Subject: systemtap
|
CVE-2009-0784
|
|
