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Fedora Update Notification
FEDORA-2010-17930
2010-11-19 21:53:42
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Name : dracut
Product : Fedora 14
Version : 006
Release : 5.fc14
URL :
http://apps.sourceforge.net/trac/dracut/wiki
Summary : Initramfs generator using udev
Description :
Dracut contains tools to create a bootable initramfs for 2.6 Linux kernels.
Unlike existing implementations, dracut does hard-code as little as possible
into the initramfs. Dracut contains various modules which are driven by the
event-based udev. Having root on MD, DM, LVM2, LUKS is supported as well as
NFS, iSCSI, NBD, FCoE with the dracut-network package.
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Update Information:
It was discovered that /dev/systty device file created by dracut-generated initramfs scripts used an insecure file permissions. This could possibly allow local user to snoop on other user's terminal.
Updated dracut no longer creates this file as device file, rather creates it a symbolic link to tty0 device file. However, for this change to take effect, user needs to re-generate initramfs (any initramfs for all kernels that are going to be booted in the future) using updated dracut version and reboot the system.
This update also provides updated udev packages that replace systty device file with a symlink on udev package upgrade and each udev start. This provides a work-around fix for users that fail to regenerate their initramfs and reboot as described above.
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ChangeLog:
* Mon Nov 22 2010 Harald Hoyer <harald@redhat.com> 006-5
- removed umask
Resolves: rhbz#655345 rhbz#655472 rhbz#654935
* Thu Nov 18 2010 Harald Hoyer <harald@redhat.com> 006-4
- fix /dev/systty
Resolves: rhbz#654935
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References:
[ 1 ] Bug #654489 - CVE-2010-4176 dracut: /dev/systty permissions could allow remote users to snoop on local users
https://bugzilla.redhat.com/show_bug.cgi?id=654489
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This update can be installed with the "yum" update program. Use
su -c 'yum update dracut' 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
https://fedoraproject.org/keys
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