SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel audit_syscall_entry() Function May Let Local Users Bypass Syscall Filtering
SecurityTracker Alert ID:  1022153
SecurityTracker URL:  http://securitytracker.com/id/1022153
CVE Reference:   CVE-2009-0834   (Links to External Site)
Date:  May 1 2009
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.6.28.7 and prior versions
Description:   A vulnerability was reported in the Linux Kernel. A local user can bypass certain security restrictions.

On systems configured so that a 32-bit process can make a 64-bit syscall (or vice versa), a local user can cause the audit_syscall_entry() function to reference the wrong syscall lookup table. A local user can may be able to bypass syscall filtering.

The original advisory is available at:

http://scary.beasts.org/security/CESA-2009-001.html

Chris Evans reported this vulnerability in January 2009.

Impact:   A local user can bypass syscall filtering.
Solution:   The vendor has issued a source code fix, available at:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ccbe495caa5e604b04d5a31d7459a6f6a76a756c

Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Access control error

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 1 2009 (Red Hat Issues Fix) Linux Kernel audit_syscall_entry() Function May Let Local Users Bypass Syscall Filtering
Red Hat has released a fix for Red Hat Enterprise Linux 4.
May 7 2009 (Red Hat Issues Fix) Linux Kernel audit_syscall_entry() Function May Let Local Users Bypass Syscall Filtering
Red Hat has released a fix for Red Hat Enterprise Linux 5.
Feb 2 2010 (Red Hat Issues Fix) Linux Kernel audit_syscall_entry() Function May Let Local Users Bypass Syscall Filtering
Red Hat has issued a fix for Red Hat Enterprise Linux 5.2 Extended Update Support.



 Source Message Contents



[Original Message Not Available for Viewing]


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2019, SecurityGlobal.net LLC