ESB-2018.3590 - [SUSE] Linux Kernel: Multiple vulnerabilities 2018-11-19

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

                               ESB-2018.3590
                   Security update for the Linux Kernel
                             19 November 2018

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

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

Product:           Linux Kernel
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Root Compromise          -- Remote/Unauthenticated
                   Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-18386 CVE-2018-14633 CVE-2018-5391
                   CVE-2018-5390  

Reference:         ESB-2018.3563
                   ESB-2018.3377
                   ESB-2018.2355
                   ESB-2018.2335
                   ASB-2018.0222.2

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2018/suse-su-20183792-1/
   https://www.suse.com/support/update/announcement/2018/suse-su-20183787-1/
   https://www.suse.com/support/update/announcement/2018/suse-su-20183789-1/

Comment: This bulletin contains three (3) SUSE security advisories.

- --------------------------BEGIN INCLUDED TEXT--------------------

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 26 for SLE 12 SP2)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:3789-1
Rating:             important
References:         #1102682 #1107832 
Cross-References:   CVE-2018-14633 CVE-2018-5390
Affected Products:
                    SUSE Linux Enterprise Server for SAP 12-SP2
                    SUSE Linux Enterprise Server 12-SP2-LTSS
______________________________________________________________________________

   An update that fixes two vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.4.121-92_98 fixes several issues.

   The following security issues were fixed:

   - CVE-2018-14633: A security flaw was found in the
     chap_server_compute_md5() function in the ISCSI target code in the Linux
     kernel in a way an authentication request from an ISCSI initiator is
     processed. An unauthenticated remote attacker can cause a stack buffer
     overflow and smash up to 17 bytes of the stack. The attack requires the
     iSCSI target to be enabled on the victim host. Depending on how the
     target's code was built (i.e. depending on a compiler, compile flags and
     hardware architecture) an attack may lead to a system crash and thus to
     a denial-of-service or possibly to a non-authorized access to data
     exported by an iSCSI target. Due to the nature of the flaw, privilege
     escalation cannot be fully ruled out, although we believe it is highly
     unlikely (bsc#1107832).
   - CVE-2018-5390: Fixed the possiblilty that the kernel can be forced to
     make very expensive calls to tcp_collapse_ofo_queue() and
     tcp_prune_ofo_queue() for every incoming packet which can lead to a
     denial of service (bnc#1102682).


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 Server for SAP 12-SP2:

      zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-2688=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-2688=1



Package List:

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

      kgraft-patch-4_4_121-92_98-default-2-2.1

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

      kgraft-patch-4_4_121-92_98-default-2-2.1


References:

   https://www.suse.com/security/cve/CVE-2018-14633.html
   https://www.suse.com/security/cve/CVE-2018-5390.html
   https://bugzilla.suse.com/1102682
   https://bugzilla.suse.com/1107832

______________________________________________________________________________

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 17 for SLE 12 SP2)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:3787-1
Rating:             important
References:         #1103098 #1112039 
Cross-References:   CVE-2018-18386 CVE-2018-5391
Affected Products:
                    SUSE Linux Enterprise Server for SAP 12-SP2
                    SUSE Linux Enterprise Server 12-SP2-LTSS
______________________________________________________________________________

   An update that fixes two vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.4.103-92_56 fixes several issues.

   The following security issues were fixed:

   - CVE-2018-5391: Fixed a denial of service attack with low rates of
     specially modified packets targeting IP fragment re-assembly. An
     attacker may have caused a denial of service condition by sending
     specially crafted IP fragments. The current vulnerability
     (CVE-2018-5391) became exploitable in the Linux kernel with the increase
     of the IP fragment reassembly queue size (bsc#1103098).
   - CVE-2018-18386: The drivers/tty/n_tty.c allowed local attackers (who are
     able to access pseudo terminals) to hang/block further usage of any
     pseudo terminal devices due to an EXTPROC versus ICANON confusion in
     TIOCINQ (bsc#1112039).


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 Server for SAP 12-SP2:

      zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-2694=1 SUSE-SLE-SAP-12-SP2-2018-2695=1 SUSE-SLE-SAP-12-SP2-2018-2696=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-2694=1 SUSE-SLE-SERVER-12-SP2-2018-2695=1 SUSE-SLE-SERVER-12-SP2-2018-2696=1



Package List:

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

      kgraft-patch-4_4_103-92_53-default-11-2.1
      kgraft-patch-4_4_103-92_56-default-11-2.1
      kgraft-patch-4_4_90-92_50-default-12-2.1

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

      kgraft-patch-4_4_103-92_53-default-11-2.1
      kgraft-patch-4_4_103-92_56-default-11-2.1
      kgraft-patch-4_4_90-92_50-default-12-2.1


References:

   https://www.suse.com/security/cve/CVE-2018-18386.html
   https://www.suse.com/security/cve/CVE-2018-5391.html
   https://bugzilla.suse.com/1103098
   https://bugzilla.suse.com/1112039

______________________________________________________________________________

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 21 for SLE 12 SP2)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:3792-1
Rating:             important
References:         #1103098 
Cross-References:   CVE-2018-5391
Affected Products:
                    SUSE Linux Enterprise Server for SAP 12-SP2
                    SUSE Linux Enterprise Server 12-SP2-LTSS
______________________________________________________________________________

   An update that fixes one vulnerability is now available.

Description:

   This update for the Linux Kernel 4.4.121-92_73 fixes one issue.

   The following security issue was fixed:

   - CVE-2018-5391: Fixed a denial of service attack with low rates of
     specially modified packets targeting IP fragment re-assembly. An
     attacker may have caused a denial of service condition by sending
     specially crafted IP fragments. The current vulnerability
     (CVE-2018-5391) became exploitable in the Linux kernel with the increase
     of the IP fragment reassembly queue size (bsc#1103098).


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 Server for SAP 12-SP2:

      zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-2689=1 SUSE-SLE-SAP-12-SP2-2018-2690=1 SUSE-SLE-SAP-12-SP2-2018-2691=1 SUSE-SLE-SAP-12-SP2-2018-2692=1 SUSE-SLE-SAP-12-SP2-2018-2693=1 SUSE-SLE-SAP-12-SP2-2018-2697=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-2689=1 SUSE-SLE-SERVER-12-SP2-2018-2690=1 SUSE-SLE-SERVER-12-SP2-2018-2691=1 SUSE-SLE-SERVER-12-SP2-2018-2692=1 SUSE-SLE-SERVER-12-SP2-2018-2693=1 SUSE-SLE-SERVER-12-SP2-2018-2697=1



Package List:

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

      kgraft-patch-4_4_114-92_64-default-9-2.1
      kgraft-patch-4_4_114-92_67-default-9-2.1
      kgraft-patch-4_4_120-92_70-default-8-2.1
      kgraft-patch-4_4_121-92_73-default-7-2.1
      kgraft-patch-4_4_121-92_80-default-7-2.1
      kgraft-patch-4_4_121-92_85-default-5-2.1

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

      kgraft-patch-4_4_114-92_64-default-9-2.1
      kgraft-patch-4_4_114-92_67-default-9-2.1
      kgraft-patch-4_4_120-92_70-default-8-2.1
      kgraft-patch-4_4_121-92_73-default-7-2.1
      kgraft-patch-4_4_121-92_80-default-7-2.1
      kgraft-patch-4_4_121-92_85-default-5-2.1


References:

   https://www.suse.com/security/cve/CVE-2018-5391.html
   https://bugzilla.suse.com/1103098

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