Date:         Wed, 11 Nov 2009 15:41:40 -0600
Reply-To:     Troy Dawson 
Sender:       Security Errata for Scientific Linux
              
From:         Troy Dawson 
Subject:      Security ERRATA Low: ecryptfs-utils on SL5.x i386/x86_64
Comments: To: "scientific-linux-errata@fnal.gov"
          

Synopsis:	Low: ecryptfs-utils security, bug fix, and enhancement update
Issue date:	2009-09-02
CVE Names:	CVE-2008-5188

These updated ecryptfs-utils packages have been upgraded to upstream
version 75, which provides a number of bug fixes and enhancements over 
the previous version. In addition, these packages provide a graphical 
program to help configure and use eCryptfs. To start this program, run 
the command:

        ecryptfs-mount-helper-gui

Important: the syntax of certain eCryptfs mount options has changed. 
Users who were previously using the initial Technology Preview release 
of ecryptfs-utils are advised to refer to the ecryptfs(7) man page, and 
to update any affected mount scripts and /etc/fstab entries for eCryptfs 
file systems.

A disclosure flaw was found in the way the "ecryptfs-setup-private" 
script passed passphrases to the "ecryptfs-wrap-passphrase" and
"ecryptfs-add-passphrase" commands as command line arguments. A local 
user could obtain the passphrases of other users who were running the 
script from the process listing. (CVE-2008-5188)

These updated packages provide various enhancements, including a mount
helper and supporting libraries to perform key management and mounting
functions.

Notable enhancements include:

* a new package, ecryptfs-utils-gui, has been added to this update. This
package depends on the pygtk2 and pygtk2-libglade packages and provides 
the eCryptfs Mount Helper GUI program. To install the GUI, first install
ecryptfs-utils and then issue the following command:

        yum install ecryptfs-utils-gui

(BZ#500997)

* the "ecryptfs-rewrite-file" utility is now more intelligent when 
dealing with non-existent files and with filtering special files such as 
the "." directory. In addition, the progress output from 
"ecryptfs-rewrite-file" has been improved and is now more explicit about 
the success status of each target. (BZ#500813)

* descriptions of the "verbose" flag and the "verbosity=[x]" option, 
where [x] is either 0 or 1, were missing from a number of eCryptfs 
manual pages, and have been added. Refer to the eCryptfs man pages for 
important information regarding using the verbose and/or verbosity 
options. (BZ#470444)

These updated packages also fix the following bugs:

* mounting a directory using the eCryptfs mount helper with an RSA key 
that was too small did not allow the eCryptfs mount helper to encrypt 
the entire key. When this situation occurred, the mount helper did not 
display an error message alerting the user to the fact that the key size 
was too small, possibly leading to corrupted files. The eCryptfs mount 
helper now refuses RSA keys which are to small to encrypt the eCryptfs 
key. (BZ#499175)

* when standard input was redirected from /dev/null or was unavailable,
attempting to mount a directory with the eCryptfs mount helper caused it 
to become unresponsive and eventually crash, or an "invalid value" error
message, depending on if the "--verbosity=[value]" option was provided 
as an argument, and, if so, its value. With these updated packages, 
attempting to mount a directory using "mount.ecryptfs" under the same 
conditions results in either the mount helper attempting to use default 
values (if "verbosity=0" is supplied), or an "invalid value" error 
message (instead of the mount helper hanging) if standard input is 
redirected and "--verbosity=1" is supplied, or that option is omitted 
entirely. (BZ#499367)

* attempting to use the eCryptfs mount helper with an OpenSSL key when 
the keyring did not contain enough space for the key resulted in an 
unhelpful error message. The user is now alerted when this situation 
occurs. (BZ#501460)

* the eCryptfs mount helper no longer fails upon receiving an incorrect 
or empty answer to "yes/no" questions. (BZ#466210)

SL 5.x

     SRPMS:
ecryptfs-utils-75-5.el5.src.rpm
     i386:
ecryptfs-utils-75-5.el5.i386.rpm
ecryptfs-utils-devel-75-5.el5.i386.rpm
ecryptfs-utils-gui-75-5.el5.i386.rpm
     x86_64:
ecryptfs-utils-75-5.el5.i386.rpm
ecryptfs-utils-75-5.el5.x86_64.rpm
ecryptfs-utils-devel-75-5.el5.i386.rpm
ecryptfs-utils-devel-75-5.el5.x86_64.rpm
ecryptfs-utils-gui-75-5.el5.x86_64.rpm

-Connie Sieh
-Troy Dawson