SUSE-SU-2017:1481-1: moderate: Security update for libnettle

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for libnettle
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Announcement ID:    SUSE-SU-2017:1481-1
Rating:             moderate
References:         #991464 
Cross-References:   CVE-2016-6489
Affected Products:
                    SUSE Linux Enterprise Software Development Kit 12-SP2
                    SUSE Linux Enterprise Server for Raspberry Pi 12-SP2
                    SUSE Linux Enterprise Server 12-SP2
                    SUSE Linux Enterprise Desktop 12-SP2
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   An update that fixes one vulnerability is now available.

Description:

   This update for libnettle fixes the following issues:

   -  CVE-2016-6489:
     * Reject invalid RSA keys with even modulo.
     * Check for invalid keys, with even p, in dsa_sign().
     * Use function mpz_powm_sec() instead of mpz_powm() (bsc#991464).


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Software Development Kit 12-SP2:

      zypper in -t patch SUSE-SLE-SDK-12-SP2-2017-910=1

   - SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:

      zypper in -t patch SUSE-SLE-RPI-12-SP2-2017-910=1

   - SUSE Linux Enterprise Server 12-SP2:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-910=1

   - SUSE Linux Enterprise Desktop 12-SP2:

      zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-910=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Software Development Kit 12-SP2 (aarch64 ppc64le s390x x86_64):

      libnettle-debugsource-2.7.1-12.1
      libnettle-devel-2.7.1-12.1

   - SUSE Linux Enterprise Server for Raspberry Pi 12-SP2 (aarch64):

      libhogweed2-2.7.1-12.1
      libhogweed2-debuginfo-2.7.1-12.1
      libnettle-debugsource-2.7.1-12.1
      libnettle4-2.7.1-12.1
      libnettle4-debuginfo-2.7.1-12.1

   - SUSE Linux Enterprise Server 12-SP2 (aarch64 ppc64le x86_64):

      libhogweed2-2.7.1-12.1
      libhogweed2-debuginfo-2.7.1-12.1
      libnettle-debugsource-2.7.1-12.1
      libnettle4-2.7.1-12.1
      libnettle4-debuginfo-2.7.1-12.1

   - SUSE Linux Enterprise Server 12-SP2 (x86_64):

      libhogweed2-32bit-2.7.1-12.1
      libhogweed2-debuginfo-32bit-2.7.1-12.1
      libnettle4-32bit-2.7.1-12.1
      libnettle4-debuginfo-32bit-2.7.1-12.1

   - SUSE Linux Enterprise Desktop 12-SP2 (x86_64):

      libhogweed2-2.7.1-12.1
      libhogweed2-32bit-2.7.1-12.1
      libhogweed2-debuginfo-2.7.1-12.1
      libhogweed2-debuginfo-32bit-2.7.1-12.1
      libnettle-debugsource-2.7.1-12.1
      libnettle4-2.7.1-12.1
      libnettle4-32bit-2.7.1-12.1
      libnettle4-debuginfo-2.7.1-12.1
      libnettle4-debuginfo-32bit-2.7.1-12.1


References:

   https://www.suse.com/security/cve/CVE-2016-6489.html
   https://bugzilla.suse.com/991464