Synopsis

Low: ecryptfs-utils security, bug fix, and enhancement update

Type/Severity

Security Advisory: Low

Topic

Updated ecryptfs-utils packages that fix a security issue, various bugs,
and add enhancements are now available for Red Hat Enterprise Linux 5.

This update has been rated as having low security impact by the Red Hat
Security Response Team.

Description

eCryptfs is a stacked, cryptographic file system. It is transparent to the
underlying file system and provides per-file granularity.

eCryptfs is released as a Technology Preview for Red Hat Enterprise Linux
5.4. 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)
  

Users are advised to upgrade to these updated ecryptfs-utils packages,
which resolve these issues and add these enhancements.

Solution

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 460496 - ecryptfs complains about a missing module, fails and then loads it
• BZ - 472524 - CVE-2008-5188 ecryptfs-utils: potential provided password disclosure in the process table
• BZ - 475969 - difference between the name of the binary and the name in its usage message
• BZ - 482834 - RHEL5: update ecryptfs-utils to latest
• BZ - 499128 - `man ecryptfs' is wrong on what to write to openssl_passwd_file=XXX
• BZ - 499367 - mount.ecrytfs hangs when used with wrong/missing stdin
• BZ - 500352 - mount helper asks different set questions when the mount options are OK and when are not
• BZ - 500361 - [ecryptfs-add-passphrase] adding key, which is in keyring already, results in error msg
• BZ - 500566 - When kernel does not support filename encryption `ecryptfs-add-passphrase --fnek' should exit with exit code != 0
• BZ - 500623 - Access-Your-Private-Data.desktop file should have an icon associated
• BZ - 500804 - Typo in ecryptfs-rewrite-file(1)
• BZ - 500810 - ecryptfs-insert-wrapped-passphrase-into-keyring fails to add passphrase to keyring if the passphrase is in the keyring already
• BZ - 500813 - ecryptfs-rewrite-file should be more wise when dealing with non-existing/bogus files
• BZ - 500817 - ecryptfs-dot-private is not expected to be executed, remove the "x" permission
• BZ - 500820 - ecryptfs-setup-swap: vol_id: command not found
• BZ - 500824 - Possible missing runtime dependencies for `ecryptfs-setup-swap'
• BZ - 500829 - `ecryptfs-setup-swap' tries to restart service ``cryptdisks'' which is not present in RHEL/Fedora
• BZ - 500850 - [RFE] ecryptfs-manager should ask for password confirmation when creating openssl key
• BZ - 500997 - ecryptfs-utils-gui must require pygtk2-libglade
• BZ - 501275 - Select key bytes: item "default" is bogus
• BZ - 501460 - Error msg from ecryptfs-utils does not reflect reality when adding key to "full" keyring

CVEs

• CVE-2008-5188

References

• http://www.redhat.com/security/updates/classification/#low

Red Hat Enterprise Linux Server 5

SRPM
ecryptfs-utils-75-5.el5.src.rpm	SHA-256: c233eaed464149b974c7ffbc8707113004337ef819eee845abe2ac7f0cfd54b6
x86_64
ecryptfs-utils-75-5.el5.i386.rpm	SHA-256: 149991a055403ba9a7ef316f2017340c4af7d8648f406dafe76b82fcc1a3c392
ecryptfs-utils-75-5.el5.x86_64.rpm	SHA-256: 2da13af958a6de3b2d00265ce49fe629938d1aae8d56c2004c0677ecd68eecba
ecryptfs-utils-devel-75-5.el5.i386.rpm	SHA-256: fbb0d4125f8a2f5227b0407419d90f98254641d29eecc19444ee794b1c78df4c
ecryptfs-utils-devel-75-5.el5.x86_64.rpm	SHA-256: f7a157613ae50d54cd17f94524f85ecd1f8c12cf6d9a25c2e73c304d2ca025de
ecryptfs-utils-gui-75-5.el5.x86_64.rpm	SHA-256: 386586581dce30ec92a5722e2949ce56b77efcb2d4bab97eaf5034db41824b3a
ia64
ecryptfs-utils-75-5.el5.ia64.rpm	SHA-256: 8c74f7d0fa3c45f6e14d586badaebe114d0ddcc026edf3c2346e7d4907a84fe8
ecryptfs-utils-devel-75-5.el5.ia64.rpm	SHA-256: db76a9947fe1ccc10e4d88655c315e5303c33acf9ec4e76131c862cee99be8e1
ecryptfs-utils-gui-75-5.el5.ia64.rpm	SHA-256: 712c5e68378958aedbadd8a1947939ad83fae773d253140a5888fbfb2eababba
i386
ecryptfs-utils-75-5.el5.i386.rpm	SHA-256: 149991a055403ba9a7ef316f2017340c4af7d8648f406dafe76b82fcc1a3c392
ecryptfs-utils-devel-75-5.el5.i386.rpm	SHA-256: fbb0d4125f8a2f5227b0407419d90f98254641d29eecc19444ee794b1c78df4c
ecryptfs-utils-gui-75-5.el5.i386.rpm	SHA-256: a7f96d1301104355ef597d26d1cc9546d9f5995ad37a49ee11d63399dae4a679

Red Hat Enterprise Linux Workstation 5

SRPM
ecryptfs-utils-75-5.el5.src.rpm	SHA-256: c233eaed464149b974c7ffbc8707113004337ef819eee845abe2ac7f0cfd54b6
x86_64
ecryptfs-utils-75-5.el5.i386.rpm	SHA-256: 149991a055403ba9a7ef316f2017340c4af7d8648f406dafe76b82fcc1a3c392
ecryptfs-utils-75-5.el5.x86_64.rpm	SHA-256: 2da13af958a6de3b2d00265ce49fe629938d1aae8d56c2004c0677ecd68eecba
ecryptfs-utils-devel-75-5.el5.i386.rpm	SHA-256: fbb0d4125f8a2f5227b0407419d90f98254641d29eecc19444ee794b1c78df4c
ecryptfs-utils-devel-75-5.el5.x86_64.rpm	SHA-256: f7a157613ae50d54cd17f94524f85ecd1f8c12cf6d9a25c2e73c304d2ca025de
ecryptfs-utils-gui-75-5.el5.x86_64.rpm	SHA-256: 386586581dce30ec92a5722e2949ce56b77efcb2d4bab97eaf5034db41824b3a
i386
ecryptfs-utils-75-5.el5.i386.rpm	SHA-256: 149991a055403ba9a7ef316f2017340c4af7d8648f406dafe76b82fcc1a3c392
ecryptfs-utils-devel-75-5.el5.i386.rpm	SHA-256: fbb0d4125f8a2f5227b0407419d90f98254641d29eecc19444ee794b1c78df4c
ecryptfs-utils-gui-75-5.el5.i386.rpm	SHA-256: a7f96d1301104355ef597d26d1cc9546d9f5995ad37a49ee11d63399dae4a679

Red Hat Enterprise Linux Desktop 5

SRPM
ecryptfs-utils-75-5.el5.src.rpm	SHA-256: c233eaed464149b974c7ffbc8707113004337ef819eee845abe2ac7f0cfd54b6
x86_64
ecryptfs-utils-75-5.el5.i386.rpm	SHA-256: 149991a055403ba9a7ef316f2017340c4af7d8648f406dafe76b82fcc1a3c392
ecryptfs-utils-75-5.el5.x86_64.rpm	SHA-256: 2da13af958a6de3b2d00265ce49fe629938d1aae8d56c2004c0677ecd68eecba
ecryptfs-utils-gui-75-5.el5.x86_64.rpm	SHA-256: 386586581dce30ec92a5722e2949ce56b77efcb2d4bab97eaf5034db41824b3a
i386
ecryptfs-utils-75-5.el5.i386.rpm	SHA-256: 149991a055403ba9a7ef316f2017340c4af7d8648f406dafe76b82fcc1a3c392
ecryptfs-utils-gui-75-5.el5.i386.rpm	SHA-256: a7f96d1301104355ef597d26d1cc9546d9f5995ad37a49ee11d63399dae4a679

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
ecryptfs-utils-75-5.el5.src.rpm	SHA-256: c233eaed464149b974c7ffbc8707113004337ef819eee845abe2ac7f0cfd54b6
s390x
ecryptfs-utils-75-5.el5.s390.rpm	SHA-256: 1e134dbc50b32ce21d686d7d3d250a277e0ffd4ad881d6644f1a6109983cccf7
ecryptfs-utils-75-5.el5.s390x.rpm	SHA-256: 4055b20e93017a49e76ab02f43b3b361581d56420a38f486c6bff63ecb809562
ecryptfs-utils-devel-75-5.el5.s390.rpm	SHA-256: d53ad31fc86cdd8b79e3eca00c0936449e5ed1cead78309923faa1f780f2375e
ecryptfs-utils-devel-75-5.el5.s390x.rpm	SHA-256: 2caa28b548553f122a8b5590e1783d9e1193323ed3ad9a07c3c8ba6d7387c2f8
ecryptfs-utils-gui-75-5.el5.s390x.rpm	SHA-256: bcbe46391ff8bd3871d6dadb0b285e8a13a4bcf0456b004d252809b7a59c6187

Red Hat Enterprise Linux for Power, big endian 5

SRPM
ecryptfs-utils-75-5.el5.src.rpm	SHA-256: c233eaed464149b974c7ffbc8707113004337ef819eee845abe2ac7f0cfd54b6
ppc
ecryptfs-utils-75-5.el5.ppc.rpm	SHA-256: ff8c3b43742353713baccb8ed8dbf8b283e9a1e4694c6a96500d3f379473bc38
ecryptfs-utils-75-5.el5.ppc64.rpm	SHA-256: 96fe44fc820fb0826b5f2062adcf8b80ae3b599fe297121e1aa601c840576837
ecryptfs-utils-devel-75-5.el5.ppc.rpm	SHA-256: b74e4b6f921588fe42792d9e88de12dd90d5ced29932b568619068f15d8cb9f7
ecryptfs-utils-devel-75-5.el5.ppc64.rpm	SHA-256: 959460b8968b1b8ba2ebd9589e3ec306971f66f5b8b822408e763fb472db942f
ecryptfs-utils-gui-75-5.el5.ppc.rpm	SHA-256: b401da7f8915530c11c4c3af167ff9807113b1b2dd52a2f0d06ee728a7db27bf

Red Hat Enterprise Linux Server from RHUI 5

SRPM
ecryptfs-utils-75-5.el5.src.rpm	SHA-256: c233eaed464149b974c7ffbc8707113004337ef819eee845abe2ac7f0cfd54b6
x86_64
ecryptfs-utils-75-5.el5.i386.rpm	SHA-256: 149991a055403ba9a7ef316f2017340c4af7d8648f406dafe76b82fcc1a3c392
ecryptfs-utils-75-5.el5.x86_64.rpm	SHA-256: 2da13af958a6de3b2d00265ce49fe629938d1aae8d56c2004c0677ecd68eecba
ecryptfs-utils-devel-75-5.el5.i386.rpm	SHA-256: fbb0d4125f8a2f5227b0407419d90f98254641d29eecc19444ee794b1c78df4c
ecryptfs-utils-devel-75-5.el5.x86_64.rpm	SHA-256: f7a157613ae50d54cd17f94524f85ecd1f8c12cf6d9a25c2e73c304d2ca025de
ecryptfs-utils-gui-75-5.el5.x86_64.rpm	SHA-256: 386586581dce30ec92a5722e2949ce56b77efcb2d4bab97eaf5034db41824b3a
i386
ecryptfs-utils-75-5.el5.i386.rpm	SHA-256: 149991a055403ba9a7ef316f2017340c4af7d8648f406dafe76b82fcc1a3c392
ecryptfs-utils-devel-75-5.el5.i386.rpm	SHA-256: fbb0d4125f8a2f5227b0407419d90f98254641d29eecc19444ee794b1c78df4c
ecryptfs-utils-gui-75-5.el5.i386.rpm	SHA-256: a7f96d1301104355ef597d26d1cc9546d9f5995ad37a49ee11d63399dae4a679