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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.3705
            SUSE-SU-2019:2517-1 Security update for libseccomp
                              3 October 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libseccomp
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Unauthorised Access -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-9893  

Reference:         ESB-2019.1959.2

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2019/suse-su-20192517-1.html

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SUSE Security Update: Security update for libseccomp

______________________________________________________________________________

Announcement ID:   SUSE-SU-2019:2517-1
Rating:            moderate
References:        #1082318 #1128828 #1142614
Cross-References:  CVE-2019-9893
Affected Products:
                   SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1
                   SUSE Linux Enterprise Module for Open Buildservice Development Tools 15
                   SUSE Linux Enterprise Module for Basesystem 15-SP1
                   SUSE Linux Enterprise Module for Basesystem 15
______________________________________________________________________________

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

Description:

This update for libseccomp fixes the following issues:
Security issues fixed:

  o CVE-2019-9893: An incorrect generation of syscall filters in libseccomp was
    fixed (bsc#1128828)


libseccomp was updated to new upstream release 2.4.1:

  o Fix a BPF generation bug where the optimizer mistakenly identified
    duplicate BPF code blocks.


libseccomp was updated to 2.4.0 (bsc#1128828 CVE-2019-9893):

  o Update the syscall table for Linux v5.0-rc5
  o Added support for the SCMP_ACT_KILL_PROCESS action
  o Added support for the SCMP_ACT_LOG action and SCMP_FLTATR_CTL_LOG attribute
  o Added explicit 32-bit (SCMP_AX_32(...)) and 64-bit (SCMP_AX_64(...))
    argument comparison macros to help protect against unexpected sign
    extension
  o Added support for the parisc and parisc64 architectures
  o Added the ability to query and set the libseccomp API level via
    seccomp_api_get(3) and seccomp_api_set(3)
  o Return -EDOM on an endian mismatch when adding an architecture to a filter
  o Renumber the pseudo syscall number for subpage_prot() so it no longer
    conflicts with spu_run()
  o Fix PFC generation when a syscall is prioritized, but no rule exists
  o Numerous fixes to the seccomp-bpf filter generation code
  o Switch our internal hashing function to jhash/Lookup3 to MurmurHash3
  o Numerous tests added to the included test suite, coverage now at ~92%
  o Update our Travis CI configuration to use Ubuntu 16.04
  o Numerous documentation fixes and updates


libseccomp was updated to release 2.3.3:

  o Updated the syscall table for Linux v4.15-rc7

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:

  o SUSE Linux Enterprise Module for Open Buildservice Development Tools
    15-SP1:
    zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2019-2517=1
  o SUSE Linux Enterprise Module for Open Buildservice Development Tools 15:
    zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-2019-2517=1
  o SUSE Linux Enterprise Module for Basesystem 15-SP1:
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2019-2517=1
  o SUSE Linux Enterprise Module for Basesystem 15:
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-2517=1

Package List:

  o SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1
    (aarch64 ppc64le s390x x86_64):
       libseccomp-debugsource-2.4.1-3.3.1
       libseccomp-tools-2.4.1-3.3.1
       libseccomp-tools-debuginfo-2.4.1-3.3.1
  o SUSE Linux Enterprise Module for Open Buildservice Development Tools 15
    (aarch64 ppc64le s390x x86_64):
       libseccomp-debugsource-2.4.1-3.3.1
       libseccomp-tools-2.4.1-3.3.1
       libseccomp-tools-debuginfo-2.4.1-3.3.1
  o SUSE Linux Enterprise Module for Basesystem 15-SP1 (aarch64 ppc64le s390x
    x86_64):
       libseccomp-debugsource-2.4.1-3.3.1
       libseccomp-devel-2.4.1-3.3.1
       libseccomp2-2.4.1-3.3.1
       libseccomp2-debuginfo-2.4.1-3.3.1
  o SUSE Linux Enterprise Module for Basesystem 15-SP1 (x86_64):
       libseccomp2-32bit-2.4.1-3.3.1
       libseccomp2-32bit-debuginfo-2.4.1-3.3.1
  o SUSE Linux Enterprise Module for Basesystem 15 (aarch64 ppc64le s390x
    x86_64):
       libseccomp-debugsource-2.4.1-3.3.1
       libseccomp-devel-2.4.1-3.3.1
       libseccomp2-2.4.1-3.3.1
       libseccomp2-debuginfo-2.4.1-3.3.1
  o SUSE Linux Enterprise Module for Basesystem 15 (x86_64):
       libseccomp2-32bit-2.4.1-3.3.1
       libseccomp2-32bit-debuginfo-2.4.1-3.3.1


References:

  o https://www.suse.com/security/cve/CVE-2019-9893.html
  o https://bugzilla.suse.com/1082318
  o https://bugzilla.suse.com/1128828
  o https://bugzilla.suse.com/1142614

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