SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2019:1532-1) (SACK Panic) (SACK Slowness)

High Nessus Plugin ID 125993

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VPR Score: 8.4

Synopsis

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

Description

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.180 to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-11477: A sequence of SACKs may have been crafted such that one can trigger an integer overflow, leading to a kernel panic.

CVE-2019-11478: It was possible to send a crafted sequence of SACKs which will fragment the TCP retransmission queue. An attacker may have been able to further exploit the fragmented queue to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection.

CVE-2019-11479: An attacker could force the Linux kernel to segment its responses into multiple TCP segments. This would drastically increased the bandwidth required to deliver the same amount of data.
Further, it would consume additional resources such as CPU and NIC processing power.

CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network. (bnc#1136424)

CVE-2019-12382: An issue was discovered in drm_load_edid_firmware in drivers/gpu/drm/drm_edid_load.c in the Linux kernel, there was an unchecked kstrdup of fwstr, which might have allowed an attacker to cause a denial of service (NULL pointer dereference and system crash).
(bnc#1136586)

CVE-2019-5489: The mincore() implementation in mm/mincore.c in the Linux kernel allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincore program.) Limited remote exploitation may have been possible, as demonstrated by latency differences in accessing public files from an Apache HTTP Server. (bnc#1120843)

CVE-2019-11833: fs/ext4/extents.c in the Linux kernel did not zero out the unused memory region in the extent tree block, which might have allowed local users to obtain sensitive information by reading uninitialized data in the filesystem. (bnc#1135281)

CVE-2018-7191: In the tun subsystem in the Linux kernel, dev_get_valid_name was not called before register_netdevice. This allowed local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. (bnc#1135603)

CVE-2019-11190: The Linux kernel allowed local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() was called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check had a race condition when reading /proc/pid/stat. (bnc#1132472)

CVE-2019-11815: An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel There was a race condition leading to a use-after-free, related to net namespace cleanup. (bnc#1134537)

CVE-2019-11884: The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel allowed a local user to obtain potentially sensitive information from kernel stack memory via a HIDPCONNADD command, because a name field may not end with a '\0' character. (bnc#1134848)

CVE-2018-17972: An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel It did not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents. (bnc#1110785)

CVE-2019-11486: The Siemens R3964 line discipline driver in drivers/tty/n_r3964.c in the Linux kernel had multiple race conditions. (bnc#1133188)

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 12-SP3:zypper in -t patch SUSE-SLE-WE-12-SP3-2019-1532=1

SUSE Linux Enterprise Software Development Kit 12-SP3:zypper in -t patch SUSE-SLE-SDK-12-SP3-2019-1532=1

SUSE Linux Enterprise Server 12-SP3:zypper in -t patch SUSE-SLE-SERVER-12-SP3-2019-1532=1

SUSE Linux Enterprise Live Patching 12-SP3:zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2019-1532=1

SUSE Linux Enterprise High Availability 12-SP3:zypper in -t patch SUSE-SLE-HA-12-SP3-2019-1532=1

SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2019-1532=1

SUSE CaaS Platform ALL :

To install this update, use the SUSE CaaS Platform Velum dashboard. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.

SUSE CaaS Platform 3.0 :

To install this update, use the SUSE CaaS Platform Velum dashboard. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1005778

https://bugzilla.suse.com/show_bug.cgi?id=1005780

https://bugzilla.suse.com/show_bug.cgi?id=1005781

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

https://bugzilla.suse.com/show_bug.cgi?id=1019695

https://bugzilla.suse.com/show_bug.cgi?id=1019696

https://bugzilla.suse.com/show_bug.cgi?id=1022604

https://bugzilla.suse.com/show_bug.cgi?id=1063638

https://bugzilla.suse.com/show_bug.cgi?id=1065600

https://bugzilla.suse.com/show_bug.cgi?id=1085535

https://bugzilla.suse.com/show_bug.cgi?id=1085539

https://bugzilla.suse.com/show_bug.cgi?id=1090888

https://bugzilla.suse.com/show_bug.cgi?id=1099658

https://bugzilla.suse.com/show_bug.cgi?id=1100132

https://bugzilla.suse.com/show_bug.cgi?id=1106110

https://bugzilla.suse.com/show_bug.cgi?id=1106284

https://bugzilla.suse.com/show_bug.cgi?id=1106929

https://bugzilla.suse.com/show_bug.cgi?id=1108293

https://bugzilla.suse.com/show_bug.cgi?id=1108838

https://bugzilla.suse.com/show_bug.cgi?id=1110785

https://bugzilla.suse.com/show_bug.cgi?id=1110946

https://bugzilla.suse.com/show_bug.cgi?id=1112063

https://bugzilla.suse.com/show_bug.cgi?id=1112178

https://bugzilla.suse.com/show_bug.cgi?id=1116803

https://bugzilla.suse.com/show_bug.cgi?id=1117562

https://bugzilla.suse.com/show_bug.cgi?id=1119086

https://bugzilla.suse.com/show_bug.cgi?id=1120642

https://bugzilla.suse.com/show_bug.cgi?id=1120843

https://bugzilla.suse.com/show_bug.cgi?id=1120902

https://bugzilla.suse.com/show_bug.cgi?id=1122776

https://bugzilla.suse.com/show_bug.cgi?id=1126040

https://bugzilla.suse.com/show_bug.cgi?id=1126356

https://bugzilla.suse.com/show_bug.cgi?id=1128052

https://bugzilla.suse.com/show_bug.cgi?id=1129138

https://bugzilla.suse.com/show_bug.cgi?id=1129770

https://bugzilla.suse.com/show_bug.cgi?id=1130972

https://bugzilla.suse.com/show_bug.cgi?id=1131107

https://bugzilla.suse.com/show_bug.cgi?id=1131488

https://bugzilla.suse.com/show_bug.cgi?id=1131565

https://bugzilla.suse.com/show_bug.cgi?id=1132212

https://bugzilla.suse.com/show_bug.cgi?id=1132472

https://bugzilla.suse.com/show_bug.cgi?id=1133188

https://bugzilla.suse.com/show_bug.cgi?id=1133874

https://bugzilla.suse.com/show_bug.cgi?id=1134160

https://bugzilla.suse.com/show_bug.cgi?id=1134162

https://bugzilla.suse.com/show_bug.cgi?id=1134338

https://bugzilla.suse.com/show_bug.cgi?id=1134537

https://bugzilla.suse.com/show_bug.cgi?id=1134564

https://bugzilla.suse.com/show_bug.cgi?id=1134565

https://bugzilla.suse.com/show_bug.cgi?id=1134566

https://bugzilla.suse.com/show_bug.cgi?id=1134651

https://bugzilla.suse.com/show_bug.cgi?id=1134760

https://bugzilla.suse.com/show_bug.cgi?id=1134806

https://bugzilla.suse.com/show_bug.cgi?id=1134813

https://bugzilla.suse.com/show_bug.cgi?id=1134848

https://bugzilla.suse.com/show_bug.cgi?id=1135013

https://bugzilla.suse.com/show_bug.cgi?id=1135014

https://bugzilla.suse.com/show_bug.cgi?id=1135015

https://bugzilla.suse.com/show_bug.cgi?id=1135100

https://bugzilla.suse.com/show_bug.cgi?id=1135120

https://bugzilla.suse.com/show_bug.cgi?id=1135281

https://bugzilla.suse.com/show_bug.cgi?id=1135603

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

https://bugzilla.suse.com/show_bug.cgi?id=1135661

https://bugzilla.suse.com/show_bug.cgi?id=1135878

https://bugzilla.suse.com/show_bug.cgi?id=1136424

https://bugzilla.suse.com/show_bug.cgi?id=1136438

https://bugzilla.suse.com/show_bug.cgi?id=1136448

https://bugzilla.suse.com/show_bug.cgi?id=1136449

https://bugzilla.suse.com/show_bug.cgi?id=1136451

https://bugzilla.suse.com/show_bug.cgi?id=1136452

https://bugzilla.suse.com/show_bug.cgi?id=1136455

https://bugzilla.suse.com/show_bug.cgi?id=1136458

https://bugzilla.suse.com/show_bug.cgi?id=1136539

https://bugzilla.suse.com/show_bug.cgi?id=1136573

https://bugzilla.suse.com/show_bug.cgi?id=1136575

https://bugzilla.suse.com/show_bug.cgi?id=1136586

https://bugzilla.suse.com/show_bug.cgi?id=1136590

https://bugzilla.suse.com/show_bug.cgi?id=1136623

https://bugzilla.suse.com/show_bug.cgi?id=1136810

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

https://bugzilla.suse.com/show_bug.cgi?id=1136990

https://bugzilla.suse.com/show_bug.cgi?id=1137142

https://bugzilla.suse.com/show_bug.cgi?id=1137162

https://bugzilla.suse.com/show_bug.cgi?id=1137586

https://bugzilla.suse.com/show_bug.cgi?id=843419

https://www.suse.com/security/cve/CVE-2018-17972/

https://www.suse.com/security/cve/CVE-2018-7191/

https://www.suse.com/security/cve/CVE-2019-11190/

https://www.suse.com/security/cve/CVE-2019-11477/

https://www.suse.com/security/cve/CVE-2019-11478/

https://www.suse.com/security/cve/CVE-2019-11479/

https://www.suse.com/security/cve/CVE-2019-11486/

https://www.suse.com/security/cve/CVE-2019-11815/

https://www.suse.com/security/cve/CVE-2019-11833/

https://www.suse.com/security/cve/CVE-2019-11884/

https://www.suse.com/security/cve/CVE-2019-12382/

https://www.suse.com/security/cve/CVE-2019-3846/

https://www.suse.com/security/cve/CVE-2019-5489/

http://www.nessus.org/u?2393585c

Plugin Details

Severity: High

ID: 125993

File Name: suse_SU-2019-1532-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2019/06/18

Updated: 2020/01/10

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 8.4

CVSS Score Source: CVE-2019-11815

CVSS v2.0

Base Score: 9.3

Temporal Score: 6.9

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

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

CVSS v3.0

Base Score: 8.1

Temporal Score: 7.1

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:U/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 Ease: No known exploits are available

Patch Publication Date: 2019/06/17

Vulnerability Publication Date: 2018/10/03

Reference Information

CVE: CVE-2018-17972, CVE-2018-7191, CVE-2019-11190, CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2019-11486, CVE-2019-11815, CVE-2019-11833, CVE-2019-11884, CVE-2019-12382, CVE-2019-3846, CVE-2019-5489