RHBA-2011:1572 - Bug Fix Advisory

Topic

Updated opencryptoki packages that fix several bugs and add various enhancements
are now available for Red Hat Enterprise Linux 6.

Description

The openCryptoki package contains version 2.11 of the PKCS#11 API, implemented
for IBM Cryptocards. This package includes support for the IBM 4758
Cryptographic CoProcessor (with the PKCS#11 firmware loaded), the IBM eServer
Cryptographic Accelerator (FC 4960 on IBM eServer System p), the IBM Crypto
Express2 (FC 0863 or FC 0870 on IBM System z), and the IBM CP Assist for
Cryptographic Function (FC 3863 on IBM System z).

These updated opencryptoki packages provide fixes for the following bugs:

• When setting the length of an RSA key for the IBM Cryptographic Accelerator

(ICA) token, initialization of the CKA_MODULUS_BITS internal attribute of
PKCS#11 was not properly tested and the RSA key length could have been set
incorrectly. As a consequence, RSA key verification in the ICA token failed. To
ensure that the RSA key is set correctly, two conditions have been added in the
respective function in the ICA specific library. The RSA key operations now work
properly on the ICA token. (BZ#734489)

• Prior to this update, the documentation provided with opencryptoki packages

stated that users using opencryptoki needed to be members of the "pkcs11" group
but did not mention the real privileges granted by adding a user to the group.
Consequently, it was not clear that the members of the "pkcs11" group are
assumed to be fully trusted. With this update opencryptoki(7) man page now
contains a security note. (BZ#730903)

• Prior to this update, an unnecessary check in the attach_shared_memory()

function was made which therefore required explicit group membership regardless
of the current effective privileges. Consequently, upon installation of the
opencryptoki packages and creation of the "pkcs11" group, the root user was
added to the group. However, root user should not need access to the group to be
able to access shared memory. With this update the shared memory checks have
been corrected and root user no longer requires membership of the "pkcs11"
group. (BZ#732756)

In addition, these updated packages provide the following enhancement:

• The openCryptoki package has been upgraded to upstream version 2.4, which

provides a number of bug fixes and enhancements over the previous version.
(BZ#693779)

Users are advised to upgrade to these updated packages, which fix these bugs and
add these enhancements.

Solution

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

This update is available via the 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 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 730903 - opencryptoki: document implications of the pkcs11 group membership
• BZ - 732756 - opencryptoki: don't add root to pkcs11 group

CVEs

(none)

References

(none)