SUSE Security Update: Security update for libgcrypt
______________________________________________________________________________

Announcement ID:    SUSE-SU-2019:1859-1
Rating:             moderate
References:         #1097073 #1125740 #1138939 
Cross-References:   CVE-2019-12904
Affected Products:
                    SUSE Linux Enterprise Module for Open Buildservice Development Tools 15
                    SUSE Linux Enterprise Module for Basesystem 15
______________________________________________________________________________

   An update that solves one vulnerability and has two fixes
   is now available.

Description:

   This update for libgcrypt fixes the following issues:

   Security issues fixed:

   - CVE-2019-12904: The C implementation of AES is vulnerable to a
     flush-and-reload side-channel attack because physical addresses are
     available to other processes. (The C implementation is used on platforms
     where an assembly-language implementation is unavailable.) (bsc#1138939)

   Other bugfixes:

   - Don't run full FIPS self-tests from constructor (bsc#1097073)
   - Skip all the self-tests except for binary integrity when called from the
     constructor (bsc#1097073)
   - Enforce the minimal RSA keygen size in fips mode (bsc#1125740)
   - avoid executing some tests twice.
   - Fixed a race condition in initialization.
   - Fixed env-script-interpreter in cavs_driver.pl
   - Fixed redundant fips tests in some situations causing failure to boot in
     fips mode. (bsc#1097073)

   This helps during booting of the system in FIPS mode with insufficient
   entropy.


Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Open Buildservice Development Tools 15:

      zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-2019-1859=1

   - SUSE Linux Enterprise Module for Basesystem 15:

      zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-1859=1



Package List:

   - SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 (aarch64 ppc64le s390x x86_64):

      libgcrypt-cavs-1.8.2-6.17.1
      libgcrypt-cavs-debuginfo-1.8.2-6.17.1
      libgcrypt-debugsource-1.8.2-6.17.1

   - SUSE Linux Enterprise Module for Basesystem 15 (aarch64 ppc64le s390x x86_64):

      libgcrypt-debugsource-1.8.2-6.17.1
      libgcrypt-devel-1.8.2-6.17.1
      libgcrypt-devel-debuginfo-1.8.2-6.17.1
      libgcrypt20-1.8.2-6.17.1
      libgcrypt20-debuginfo-1.8.2-6.17.1
      libgcrypt20-hmac-1.8.2-6.17.1

   - SUSE Linux Enterprise Module for Basesystem 15 (x86_64):

      libgcrypt20-32bit-1.8.2-6.17.1
      libgcrypt20-32bit-debuginfo-1.8.2-6.17.1
      libgcrypt20-hmac-32bit-1.8.2-6.17.1


References:

   https://www.suse.com/security/cve/CVE-2019-12904.html
   https://bugzilla.suse.com/1097073
   https://bugzilla.suse.com/1125740
   https://bugzilla.suse.com/1138939

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