SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2344-2) (Foreshadow)

High Nessus Plugin ID 118283

Synopsis

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

Description

The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-3620: Local attackers on baremetal systems could use speculative code patterns on hyperthreaded processors to read data present in the L1 Datacache used by other hyperthreads on the same CPU core, potentially leaking sensitive data. (bnc#1087081).

CVE-2018-3646: Local attackers in virtualized guest systems could use speculative code patterns on hyperthreaded processors to read data present in the L1 Datacache used by other hyperthreads on the same CPU core, potentially leaking sensitive data, even from other virtual machines or the host system. (bnc#1089343).

CVE-2018-5390 aka 'SegmentSmack': The Linux 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#1102340).

CVE-2018-5391 aka 'FragmentSmack': A flaw in the IP packet reassembly could be used by remote attackers to consume lots of CPU time (bnc#1103097).

CVE-2018-14734: drivers/infiniband/core/ucma.c allowed ucma_leave_multicast to access a certain data structure after a cleanup step in ucma_process_join, which allowed attackers to cause a denial of service (use-after-free) (bnc#1103119).

CVE-2017-18344: The timer_create syscall implementation in kernel/time/posix-timers.c didn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allowed userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE) (bnc#1102851 bnc#1103580).

CVE-2018-9385: When printing the 'driver_override' option from with-in the amba driver, a very long line could expose one additional uninitialized byte (bnc#1100491).

CVE-2018-13053: The alarm_timer_nsleep function in kernel/time/alarmtimer.c had an integer overflow via a large relative timeout because ktime_add_safe is not used (bnc#1099924).

CVE-2018-13405: The inode_init_owner function in fs/inode.c allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group.
The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416).

CVE-2018-13406: An integer overflow in the uvesafb_setcmap function in drivers/video/fbdev/uvesafb.c could result in local attackers being able to crash the kernel or potentially elevate privileges because kmalloc_array is not used (bnc#1098016 1100418).

CVE-2018-5814: Multiple race condition errors when handling probe, disconnect, and rebind operations could be exploited to trigger a use-after-free condition or a NULL pointer dereference by sending multiple USB over IP packets (bnc#1096480).

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 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 12-SP2-BCL:zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2018-1603=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1064232

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

https://bugzilla.suse.com/show_bug.cgi?id=1083635

https://bugzilla.suse.com/show_bug.cgi?id=1085042

https://bugzilla.suse.com/show_bug.cgi?id=1086652

https://bugzilla.suse.com/show_bug.cgi?id=1087081

https://bugzilla.suse.com/show_bug.cgi?id=1089343

https://bugzilla.suse.com/show_bug.cgi?id=1090123

https://bugzilla.suse.com/show_bug.cgi?id=1091171

https://bugzilla.suse.com/show_bug.cgi?id=1094248

https://bugzilla.suse.com/show_bug.cgi?id=1096130

https://bugzilla.suse.com/show_bug.cgi?id=1096480

https://bugzilla.suse.com/show_bug.cgi?id=1096978

https://bugzilla.suse.com/show_bug.cgi?id=1097140

https://bugzilla.suse.com/show_bug.cgi?id=1097551

https://bugzilla.suse.com/show_bug.cgi?id=1098016

https://bugzilla.suse.com/show_bug.cgi?id=1098425

https://bugzilla.suse.com/show_bug.cgi?id=1098435

https://bugzilla.suse.com/show_bug.cgi?id=1099924

https://bugzilla.suse.com/show_bug.cgi?id=1100089

https://bugzilla.suse.com/show_bug.cgi?id=1100416

https://bugzilla.suse.com/show_bug.cgi?id=1100418

https://bugzilla.suse.com/show_bug.cgi?id=1100491

https://bugzilla.suse.com/show_bug.cgi?id=1101557

https://bugzilla.suse.com/show_bug.cgi?id=1102340

https://bugzilla.suse.com/show_bug.cgi?id=1102851

https://bugzilla.suse.com/show_bug.cgi?id=1103097

https://bugzilla.suse.com/show_bug.cgi?id=1103119

https://bugzilla.suse.com/show_bug.cgi?id=1103580

https://www.suse.com/security/cve/CVE-2017-18344/

https://www.suse.com/security/cve/CVE-2018-13053/

https://www.suse.com/security/cve/CVE-2018-13405/

https://www.suse.com/security/cve/CVE-2018-13406/

https://www.suse.com/security/cve/CVE-2018-14734/

https://www.suse.com/security/cve/CVE-2018-3620/

https://www.suse.com/security/cve/CVE-2018-3646/

https://www.suse.com/security/cve/CVE-2018-5390/

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

https://www.suse.com/security/cve/CVE-2018-5814/

https://www.suse.com/security/cve/CVE-2018-9385/

http://www.nessus.org/u?5c35a6b5

Plugin Details

Severity: High

ID: 118283

File Name: suse_SU-2018-2344-2.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2018/10/22

Updated: 2019/04/05

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Temporal Score: 6.4

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

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

CVSS v3.0

Base Score: 7.8

Temporal Score: 7.2

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

Temporal Vector: CVSS:3.0/E:F/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-syms, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_92-default, p-cpe:/a:novell:suse_linux:lttng-modules, p-cpe:/a:novell:suse_linux:lttng-modules-debugsource, p-cpe:/a:novell:suse_linux:lttng-modules-kmp-default, p-cpe:/a:novell:suse_linux:lttng-modules-kmp-default-debuginfo, 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: 2018/10/18

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2017-18344, CVE-2018-13053, CVE-2018-13405, CVE-2018-13406, CVE-2018-14734, CVE-2018-3620, CVE-2018-3646, CVE-2018-5390, CVE-2018-5391, CVE-2018-5814, CVE-2018-9385