New samba packages available to fix potential security vulnerability

New samba packages are available that fix a security vulnerability present
in samba versions 2.2.2 through 2.2.6. A potential attacker could gain
root access on the target machine. It is strongly encouraged that all Samba
users update to the fixed packages.

As of this time, there are no known exploits for this vulnerability.

There was a bug in the length checking for encrypted password change
requests from clients. A client could potentially send an encrypted
password, which, when decrypted with the old hashed password, could be
used as a buffer overrun attack on smbd's stack. The attack would
have to be crafted such that converting a DOS codepage string to little
endian UCS2 unicode would translate into an executable block of code.

Thanks to the Debian Samba maintainers for discovering this issue, and to
the Samba team for providing the fix (and the problem description text above.)

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

https://www.redhat.com/security/data/cve/CVE-2002-1318.html

change, encrypted, password, samba, security