SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:1854-1)

High Nessus Plugin ID 126743

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VPR Score: 6.7

Synopsis

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

Description

The SUSE Linux Enterprise 15 SP1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-10638: In the Linux kernel, a device could be tracked by an attacker using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and ICMP). When such traffic was sent to multiple destination IP addresses, it was possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). An attack may have been conducted by hosting a crafted web page that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addresses (bnc#1140575 1140577).

CVE-2019-10639: The Linux kernel allowed Information Exposure (partial kernel address disclosure), leading to a KASLR bypass. Specifically, it was possible to extract the KASLR kernel image offset using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and ICMP). When such traffic was sent to multiple destination IP addresses, it was possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). This key contains enough bits from a kernel address (of a static variable) so when the key was extracted (via enumeration), the offset of the kernel image was exposed. This attack could be carried out remotely, by the attacker forcing the target device to send UDP or ICMP (or certain other) traffic to attacker-controlled IP addresses. Forcing a server to send UDP traffic is trivial if the server is a DNS server. ICMP traffic is trivial if the server answers ICMP Echo requests (ping). For client targets, if the target visits the attacker's web page, then WebRTC or gQUIC can be used to force UDP traffic to attacker-controlled IP addresses. NOTE: this attack against KASLR became viable because IP ID generation was changed to have a dependency on an address associated with a network namespace (bnc#1140577).

CVE-2019-13233: In arch/x86/lib/insn-eval.c in the Linux kernel, there was a use-after-free for access to an LDT entry because of a race condition between modify_ldt() and a #BR exception for an MPX bounds violation (bnc#1140454).

CVE-2018-20836: An issue was discovered in the Linux kernel There was a race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free (bnc#1134395).

CVE-2019-10126: A flaw was found in the Linux kernel. A heap based buffer overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c might have lead to memory corruption and possibly other consequences (bnc#1136935).

CVE-2019-11599: The coredump implementation in the Linux kernel did not use locking or other mechanisms to prevent vma layout or vma flags changes while it ran, which allowed local users to obtain sensitive information, cause a denial of service, or possibly have unspecified other impact by triggering a race condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c (bnc#1131645 1133738).

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 Workstation Extension 15-SP1:zypper in -t patch SUSE-SLE-Product-WE-15-SP1-2019-1854=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1:zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2019-1854=1

SUSE Linux Enterprise Module for Live Patching 15-SP1:zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2019-1854=1

SUSE Linux Enterprise Module for Legacy Software 15-SP1:zypper in -t patch SUSE-SLE-Module-Legacy-15-SP1-2019-1854=1

SUSE Linux Enterprise Module for Development Tools 15-SP1:zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP1-2019-1854=1

SUSE Linux Enterprise Module for Basesystem 15-SP1:zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2019-1854=1

SUSE Linux Enterprise High Availability 15-SP1:zypper in -t patch SUSE-SLE-Product-HA-15-SP1-2019-1854=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1051510

https://bugzilla.suse.com/show_bug.cgi?id=1071995

https://bugzilla.suse.com/show_bug.cgi?id=1088047

https://bugzilla.suse.com/show_bug.cgi?id=1098633

https://bugzilla.suse.com/show_bug.cgi?id=1103990

https://bugzilla.suse.com/show_bug.cgi?id=1103991

https://bugzilla.suse.com/show_bug.cgi?id=1103992

https://bugzilla.suse.com/show_bug.cgi?id=1106383

https://bugzilla.suse.com/show_bug.cgi?id=1109837

https://bugzilla.suse.com/show_bug.cgi?id=1111666

https://bugzilla.suse.com/show_bug.cgi?id=1112374

https://bugzilla.suse.com/show_bug.cgi?id=1114685

https://bugzilla.suse.com/show_bug.cgi?id=1119113

https://bugzilla.suse.com/show_bug.cgi?id=1119532

https://bugzilla.suse.com/show_bug.cgi?id=1120423

https://bugzilla.suse.com/show_bug.cgi?id=1125703

https://bugzilla.suse.com/show_bug.cgi?id=1128902

https://bugzilla.suse.com/show_bug.cgi?id=1130836

https://bugzilla.suse.com/show_bug.cgi?id=1131645

https://bugzilla.suse.com/show_bug.cgi?id=1132390

https://bugzilla.suse.com/show_bug.cgi?id=1133401

https://bugzilla.suse.com/show_bug.cgi?id=1133738

https://bugzilla.suse.com/show_bug.cgi?id=1134303

https://bugzilla.suse.com/show_bug.cgi?id=1134395

https://bugzilla.suse.com/show_bug.cgi?id=1135556

https://bugzilla.suse.com/show_bug.cgi?id=1135642

https://bugzilla.suse.com/show_bug.cgi?id=1135897

https://bugzilla.suse.com/show_bug.cgi?id=1136161

https://bugzilla.suse.com/show_bug.cgi?id=1136264

https://bugzilla.suse.com/show_bug.cgi?id=1136343

https://bugzilla.suse.com/show_bug.cgi?id=1136935

https://bugzilla.suse.com/show_bug.cgi?id=1137625

https://bugzilla.suse.com/show_bug.cgi?id=1137728

https://bugzilla.suse.com/show_bug.cgi?id=1138879

https://bugzilla.suse.com/show_bug.cgi?id=1139712

https://bugzilla.suse.com/show_bug.cgi?id=1139751

https://bugzilla.suse.com/show_bug.cgi?id=1139771

https://bugzilla.suse.com/show_bug.cgi?id=1139865

https://bugzilla.suse.com/show_bug.cgi?id=1140133

https://bugzilla.suse.com/show_bug.cgi?id=1140228

https://bugzilla.suse.com/show_bug.cgi?id=1140328

https://bugzilla.suse.com/show_bug.cgi?id=1140405

https://bugzilla.suse.com/show_bug.cgi?id=1140424

https://bugzilla.suse.com/show_bug.cgi?id=1140428

https://bugzilla.suse.com/show_bug.cgi?id=1140454

https://bugzilla.suse.com/show_bug.cgi?id=1140463

https://bugzilla.suse.com/show_bug.cgi?id=1140575

https://bugzilla.suse.com/show_bug.cgi?id=1140577

https://bugzilla.suse.com/show_bug.cgi?id=1140637

https://bugzilla.suse.com/show_bug.cgi?id=1140658

https://bugzilla.suse.com/show_bug.cgi?id=1140715

https://bugzilla.suse.com/show_bug.cgi?id=1140719

https://bugzilla.suse.com/show_bug.cgi?id=1140726

https://bugzilla.suse.com/show_bug.cgi?id=1140727

https://bugzilla.suse.com/show_bug.cgi?id=1140728

https://bugzilla.suse.com/show_bug.cgi?id=1140814

https://bugzilla.suse.com/show_bug.cgi?id=1140887

https://bugzilla.suse.com/show_bug.cgi?id=1140888

https://bugzilla.suse.com/show_bug.cgi?id=1140889

https://bugzilla.suse.com/show_bug.cgi?id=1140891

https://bugzilla.suse.com/show_bug.cgi?id=1140893

https://bugzilla.suse.com/show_bug.cgi?id=1140948

https://bugzilla.suse.com/show_bug.cgi?id=1140954

https://bugzilla.suse.com/show_bug.cgi?id=1140955

https://bugzilla.suse.com/show_bug.cgi?id=1140956

https://bugzilla.suse.com/show_bug.cgi?id=1140957

https://bugzilla.suse.com/show_bug.cgi?id=1140958

https://bugzilla.suse.com/show_bug.cgi?id=1140959

https://bugzilla.suse.com/show_bug.cgi?id=1140960

https://bugzilla.suse.com/show_bug.cgi?id=1140961

https://bugzilla.suse.com/show_bug.cgi?id=1140962

https://bugzilla.suse.com/show_bug.cgi?id=1140964

https://bugzilla.suse.com/show_bug.cgi?id=1140971

https://bugzilla.suse.com/show_bug.cgi?id=1140972

https://bugzilla.suse.com/show_bug.cgi?id=1140992

https://www.suse.com/security/cve/CVE-2018-20836/

https://www.suse.com/security/cve/CVE-2019-10126/

https://www.suse.com/security/cve/CVE-2019-10638/

https://www.suse.com/security/cve/CVE-2019-10639/

https://www.suse.com/security/cve/CVE-2019-11599/

https://www.suse.com/security/cve/CVE-2019-13233/

http://www.nessus.org/u?7a0188d6

Plugin Details

Severity: High

ID: 126743

File Name: suse_SU-2019-1854-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2019/07/16

Updated: 2020/01/08

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 6.7

CVSS Score Source: CVE-2018-20836

CVSS v2.0

Base Score: 9.3

Temporal Score: 7.3

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

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

CVSS v3.0

Base Score: 8.1

Temporal Score: 7.3

Vector: CVSS:3.0/AV:N/AC:H/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-debug, p-cpe:/a:novell:suse_linux:kernel-debug-base, p-cpe:/a:novell:suse_linux:kernel-debug-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-debug-debuginfo, p-cpe:/a:novell:suse_linux:kernel-debug-debugsource, p-cpe:/a:novell:suse_linux:kernel-debug-devel, p-cpe:/a:novell:suse_linux:kernel-debug-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-debug-livepatch-devel, 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-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-livepatch, p-cpe:/a:novell:suse_linux:kernel-default-man, p-cpe:/a:novell:suse_linux:kernel-kvmsmall, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-base, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-debuginfo, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-debugsource, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-devel, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-livepatch-devel, p-cpe:/a:novell:suse_linux:kernel-obs-build, p-cpe:/a:novell:suse_linux:kernel-obs-build-debugsource, p-cpe:/a:novell:suse_linux:kernel-obs-qa, p-cpe:/a:novell:suse_linux:kernel-syms, p-cpe:/a:novell:suse_linux:kernel-vanilla, p-cpe:/a:novell:suse_linux:kernel-vanilla-base, p-cpe:/a:novell:suse_linux:kernel-vanilla-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-vanilla-debuginfo, p-cpe:/a:novell:suse_linux:kernel-vanilla-debugsource, p-cpe:/a:novell:suse_linux:kernel-vanilla-devel, p-cpe:/a:novell:suse_linux:kernel-vanilla-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-vanilla-livepatch-devel, p-cpe:/a:novell:suse_linux:kernel-zfcpdump, p-cpe:/a:novell:suse_linux:kernel-zfcpdump-debuginfo, p-cpe:/a:novell:suse_linux:kernel-zfcpdump-debugsource, p-cpe:/a:novell:suse_linux:kernel-zfcpdump-man, p-cpe:/a:novell:suse_linux:kselftests-kmp-default, p-cpe:/a:novell:suse_linux:kselftests-kmp-default-debuginfo, p-cpe:/a:novell:suse_linux:reiserfs-kmp-default, p-cpe:/a:novell:suse_linux:reiserfs-kmp-default-debuginfo, cpe:/o:novell:suse_linux:15

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: 2019/07/15

Vulnerability Publication Date: 2019/04/29

Reference Information

CVE: CVE-2018-20836, CVE-2019-10126, CVE-2019-10638, CVE-2019-10639, CVE-2019-11599, CVE-2019-13233