SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:0416-1) (Spectre)

Critical Nessus Plugin ID 106748

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The SUSE Linux Enterprise 12 SP2 kernel was updated to 4.4.114 to receive various security and bugfixes. The following security bugs were fixed :

- CVE-2017-5715: Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis (bnc#1068032). The previous fix using CPU Microcode has been complemented by building the Linux Kernel with return trampolines aka 'retpolines'.

- CVE-2017-15129: A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel The function get_net_ns_by_id() in net/core/net_namespace.c did not check for the net::count value after it has found a peer network in netns_ids idr, which could lead to double free and memory corruption. This vulnerability could allow an unprivileged local user to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is thought to be unlikely (bnc#1074839).

- CVE-2017-17712: The raw_sendmsg() function in net/ipv4/raw.c in the Linux kernel has a race condition in inet->hdrincl that leads to uninitialized stack pointer usage; this allowed a local user to execute code and gain privileges (bnc#1073229).

- CVE-2017-17862: kernel/bpf/verifier.c in the Linux kernel ignored unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service (bnc#1073928).

- CVE-2017-17864: kernel/bpf/verifier.c in the Linux kernel mishandled states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allowed local users to obtain potentially sensitive address information, aka a 'pointer leak (bnc#1073928).

- CVE-2017-18017: The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel allowed remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action (bnc#1074488).

- CVE-2018-1000004: In the Linux kernel a race condition vulnerability existed in the sound system, this can lead to a deadlock and denial of service condition (bnc#1076017).

- CVE-2018-5332: In the Linux kernel the rds_message_alloc_sgs() function did not validate a value that is used during DMA page allocation, leading to a heap-based out-of-bounds write (related to the rds_rdma_extra_size function in net/rds/rdma.c) (bnc#1075621).

- CVE-2018-5333: In the Linux kernel the rds_cmsg_atomic function in net/rds/rdma.c mishandled cases where page pinning fails or an invalid address is supplied, leading to an rds_atomic_free_op NULL pointer dereference (bnc#1075617).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

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

SUSE Linux Enterprise Workstation Extension 12-SP2:zypper in -t patch SUSE-SLE-WE-12-SP2-2018-285=1

SUSE Linux Enterprise Software Development Kit 12-SP2:zypper in -t patch SUSE-SLE-SDK-12-SP2-2018-285=1

SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:zypper in -t patch SUSE-SLE-RPI-12-SP2-2018-285=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-285=1

SUSE Linux Enterprise Live Patching 12:zypper in -t patch SUSE-SLE-Live-Patching-12-2018-285=1

SUSE Linux Enterprise High Availability 12-SP2:zypper in -t patch SUSE-SLE-HA-12-SP2-2018-285=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2018-285=1

OpenStack Cloud Magnum Orchestration 7:zypper in -t patch SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2018-285=1

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

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1012382

https://bugzilla.suse.com/show_bug.cgi?id=1012917

https://bugzilla.suse.com/show_bug.cgi?id=1019784

https://bugzilla.suse.com/show_bug.cgi?id=1022476

https://bugzilla.suse.com/show_bug.cgi?id=1031717

https://bugzilla.suse.com/show_bug.cgi?id=1038078

https://bugzilla.suse.com/show_bug.cgi?id=1038085

https://bugzilla.suse.com/show_bug.cgi?id=1043652

https://bugzilla.suse.com/show_bug.cgi?id=1048585

https://bugzilla.suse.com/show_bug.cgi?id=1052360

https://bugzilla.suse.com/show_bug.cgi?id=1060279

https://bugzilla.suse.com/show_bug.cgi?id=1066223

https://bugzilla.suse.com/show_bug.cgi?id=1066842

https://bugzilla.suse.com/show_bug.cgi?id=1068032

https://bugzilla.suse.com/show_bug.cgi?id=1068038

https://bugzilla.suse.com/show_bug.cgi?id=1068569

https://bugzilla.suse.com/show_bug.cgi?id=1068984

https://bugzilla.suse.com/show_bug.cgi?id=1069160

https://bugzilla.suse.com/show_bug.cgi?id=1070799

https://bugzilla.suse.com/show_bug.cgi?id=1072163

https://bugzilla.suse.com/show_bug.cgi?id=1072484

https://bugzilla.suse.com/show_bug.cgi?id=1072589

https://bugzilla.suse.com/show_bug.cgi?id=1073229

https://bugzilla.suse.com/show_bug.cgi?id=1073928

https://bugzilla.suse.com/show_bug.cgi?id=1074134

https://bugzilla.suse.com/show_bug.cgi?id=1074392

https://bugzilla.suse.com/show_bug.cgi?id=1074488

https://bugzilla.suse.com/show_bug.cgi?id=1074621

https://bugzilla.suse.com/show_bug.cgi?id=1074709

https://bugzilla.suse.com/show_bug.cgi?id=1074839

https://bugzilla.suse.com/show_bug.cgi?id=1074847

https://bugzilla.suse.com/show_bug.cgi?id=1075066

https://bugzilla.suse.com/show_bug.cgi?id=1075078

https://bugzilla.suse.com/show_bug.cgi?id=1075087

https://bugzilla.suse.com/show_bug.cgi?id=1075091

https://bugzilla.suse.com/show_bug.cgi?id=1075428

https://bugzilla.suse.com/show_bug.cgi?id=1075617

https://bugzilla.suse.com/show_bug.cgi?id=1075621

https://bugzilla.suse.com/show_bug.cgi?id=1075627

https://bugzilla.suse.com/show_bug.cgi?id=1075994

https://bugzilla.suse.com/show_bug.cgi?id=1076017

https://bugzilla.suse.com/show_bug.cgi?id=1076110

https://bugzilla.suse.com/show_bug.cgi?id=1076806

https://bugzilla.suse.com/show_bug.cgi?id=1076809

https://bugzilla.suse.com/show_bug.cgi?id=1076872

https://bugzilla.suse.com/show_bug.cgi?id=1076899

https://bugzilla.suse.com/show_bug.cgi?id=1077068

https://bugzilla.suse.com/show_bug.cgi?id=1077560

https://bugzilla.suse.com/show_bug.cgi?id=1077592

https://bugzilla.suse.com/show_bug.cgi?id=1078526

https://bugzilla.suse.com/show_bug.cgi?id=1078681

https://bugzilla.suse.com/show_bug.cgi?id=963844

https://bugzilla.suse.com/show_bug.cgi?id=988524

https://www.suse.com/security/cve/CVE-2017-15129/

https://www.suse.com/security/cve/CVE-2017-17712/

https://www.suse.com/security/cve/CVE-2017-17862/

https://www.suse.com/security/cve/CVE-2017-17864/

https://www.suse.com/security/cve/CVE-2017-18017/

https://www.suse.com/security/cve/CVE-2017-5715/

https://www.suse.com/security/cve/CVE-2018-1000004/

https://www.suse.com/security/cve/CVE-2018-5332/

https://www.suse.com/security/cve/CVE-2018-5333/

http://www.nessus.org/u?243cf382

Plugin Details

Severity: Critical

ID: 106748

File Name: suse_SU-2018-0416-1.nasl

Version: 3.4

Type: local

Agent: unix

Published: 2018/02/12

Updated: 2018/12/01

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kernel-default, p-cpe:/a:novell:suse_linux:kernel-default-base, p-cpe:/a:novell:suse_linux:kernel-default-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-debugsource, p-cpe:/a:novell:suse_linux:kernel-default-devel, p-cpe:/a:novell:suse_linux:kernel-default-extra, p-cpe:/a:novell:suse_linux:kernel-default-extra-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-man, p-cpe:/a:novell:suse_linux:kernel-syms, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/02/09

Reference Information

CVE: CVE-2017-15129, CVE-2017-17712, CVE-2017-17862, CVE-2017-17864, CVE-2017-18017, CVE-2017-5715, CVE-2018-1000004, CVE-2018-5332, CVE-2018-5333

IAVA: 2018-A-0020