LinuxSecurity.com
Share your story
The central voice for Linux and Open Source security news
Home News Topics Advisories HOWTOs Features Newsletters About Register

Welcome!
Sign up!
EnGarde Community
Login
Polls
What is the most important Linux security technology?
 
Advisories
Community
Linux Events
Linux User Groups
Link to Us
Security Center
Book Reviews
Security Dictionary
Security Tips
SELinux
White Papers
Featured Blogs
All About Linux
DanWalsh LiveJournal
Securitydistro
Latest Newsletters
Linux Security Week: October 27th, 2014
Linux Advisory Watch: October 24th, 2014
Subscribe
LinuxSecurity Newsletters
E-mail:
Choose Lists:
About our Newsletters
RSS Feeds
Get the LinuxSecurity news you want faster with RSS
Powered By

  
Fedora 9 Update: udev-124-4.fc9 Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
Fedora udev provides a user-space API and implements a dynamic device directory, providing only the devices present on the system. udev replaces devfs in order to provide greater hot plug functionality. Netlink is a datagram oriented service, used to transfer information between kernel modules and user-space processes. It was discovered that udev did not properly check the origin of Netlink messages. A local attacker could use this flaw to gain root privileges via a crafted Netlink message sent to udev, causing it to create a world- writable block device file for an existing system block device (for example, the root file system). (CVE-2009-1185) An integer overflow flaw, potentially leading to heap-based buffer overflow was found in one of the utilities providing functionality of the udev device information interface. An attacker could use this flaw to cause a denial of service, or possibly, to execute arbitrary code by providing a specially-crafted arguments as input to this utility. (CVE-2009-1186) Thanks to Sebastian Krahmer of the SUSE Security Team for responsibly reporting this flaw. Users of udev are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the update, the udevd daemon will be restarted automatically.
--------------------------------------------------------------------------------
Fedora Update Notification
FEDORA-2009-3712
2009-04-16 14:36:46
--------------------------------------------------------------------------------

Name        : udev
Product     : Fedora 9
Version     : 124
Release     : 4.fc9
URL         : http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html
Summary     : A userspace implementation of devfs
Description :
The udev package contains an implementation of devfs in
userspace using sysfs and netlink.

--------------------------------------------------------------------------------
Update Information:

udev provides a user-space API and implements a dynamic device directory,
providing only the devices present on the system. udev replaces devfs in order
to provide greater hot plug functionality. Netlink is a datagram oriented
service, used to transfer information between kernel modules and user-space
processes.    It was discovered that udev did not properly check the origin of
Netlink messages. A local attacker could use this flaw to gain root privileges
via a crafted Netlink message sent to udev, causing it to create a world-
writable block device file for an existing system block device (for example, the
root file system). (CVE-2009-1185)    An integer overflow flaw, potentially
leading to heap-based buffer overflow was found in one of the utilities
providing functionality of the udev device information interface. An attacker
could use this flaw to cause a denial of service, or possibly, to execute
arbitrary code by providing a specially-crafted arguments as input to this
utility. (CVE-2009-1186)    Thanks to Sebastian Krahmer of the SUSE Security
Team for responsibly reporting this flaw.    Users of udev are advised to
upgrade to these updated packages, which contain a backported patch to correct
this issue. After installing the update, the udevd daemon will be restarted
automatically.
--------------------------------------------------------------------------------
ChangeLog:

* Thu Apr 16 2009 Harald Hoyer  124-4
- fix for CVE-2009-1186
* Tue Apr 14 2009 Harald Hoyer  124-3
- fix for CVE-2009-1185
* Wed Aug  6 2008 Harald Hoyer  124-2
- added patch for cdrom tray close bug (rhbz#453095)
- fixed udevadm syntax in start_udev (credits B.J.W. Polman)
* Fri Jul  4 2008 Harald Hoyer  124-1.2
- make block devices 0660 as an interim fix (rhbz#451320)
* Tue Jun 17 2008 Harald Hoyer  124-1.1
- readded udevcontrol, udevtrigger symlinks for Fedora 9,
  which are needed by live-cd-tools
* Thu Jun 12 2008 Harald Hoyer  124-1
- version 124
- removed udevcontrol, udevtrigger symlinks (use udevadm now)
* Tue Jun  3 2008 Jeremy Katz  - 121-2.20080516git
- Add lost F9 change to remove /dev/.udev in start_udev (#442827)
* Fri May 16 2008 Harald Hoyer  121-1.20080516git
- version 121 + latest git fixes
* Wed May  7 2008 Harald Hoyer  120-6.20080421git
- added input/hp_ilo_mouse symlink
--------------------------------------------------------------------------------
References:

  [ 1 ] Bug #495051 - CVE-2009-1185 udev: Uncheck origin of NETLINK messages
        https://bugzilla.redhat.com/show_bug.cgi?id=495051
  [ 2 ] Bug #495052 - CVE-2009-1186 udev: Buffer overflow in path encoding routine
        https://bugzilla.redhat.com/show_bug.cgi?id=495052
--------------------------------------------------------------------------------

This update can be installed with the "yum" update program.  Use 
su -c 'yum update udev' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key.  More details on the
GPG keys used by the Fedora Project can be found at
http://fedoraproject.org/keys
--------------------------------------------------------------------------------

_______________________________________________
Fedora-package-announce mailing list
Fedora-package-announce@redhat.com
http://www.redhat.com/mailman/listinfo/fedora-package-announce
 
< Prev   Next >
    
Partner

 

Latest Features
Peter Smith Releases Linux Network Security Online
Securing a Linux Web Server
Password guessing with Medusa 2.0
Password guessing as an attack vector
Squid and Digest Authentication
Squid and Basic Authentication
Demystifying the Chinese Hacking Industry: Earning 6 Million a Night
Free Online security course (LearnSIA) - A Call for Help
What You Need to Know About Linux Rootkits
Review: A Practical Guide to Fedora and Red Hat Enterprise Linux - Fifth Edition
Yesterday's Edition
Hackers Are Using Gmail Drafts to Update Their Malware and Steal Data
Hackers target unclassified White House network
BYOD: Why the biggest security worry is the fool within rather than the enemy without
Partner Sponsor

Community | HOWTOs | Blogs | Features | Book Reviews | Networking
 Security Projects |  Latest News |  Newsletters |  SELinux |  Privacy |  Home
 Hardening |   About Us |   Advertise |   Legal Notice |   RSS |   Guardian Digital
(c)Copyright 2014 Guardian Digital, Inc. All rights reserved.