SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:1772-1)

medium Nessus Plugin ID 110660

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VPR Score: 5.9

Synopsis

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

Description

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.136 to receive various security and bugfixes. The following security bugs were fixed :

- CVE-2018-5848: In the function wmi_set_ie(), the length validation code did not handle unsigned integer overflow properly. As a result, a large value of the 'ie_len' argument could have caused a buffer overflow (bnc#1097356).

- CVE-2017-18249: The add_free_nid function did not properly track an allocated nid, which allowed local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads (bnc#1087036).

- CVE-2018-3665: Prevent disclosure of FPU registers (including XMM and AVX registers) between processes.
These registers might contain encryption keys when doing SSE accelerated AES enc/decryption (bsc#1087086).

- CVE-2017-18241: Prevent a NULL pointer dereference by using a noflush_merge option that triggers a NULL value for a flush_cmd_control data structure (bnc#1086400).

- CVE-2017-17741: The KVM implementation in the Linux kernel allowed attackers to obtain potentially sensitive information from kernel memory, aka a write_mmio stack-based out-of-bounds read (bnc#1073311).

- CVE-2018-12233: In the ea_get function in fs/jfs/xattr.c, a memory corruption bug in JFS can be triggered by calling setxattr twice with two different extended attribute names on the same file. This vulnerability can be triggered by an unprivileged user with the ability to create files and execute programs. A kmalloc call is incorrect, leading to slab-out-of-bounds in jfs_xattr (bnc#1097234).

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-SP3-2018-1199=1

SUSE Linux Enterprise Software Development Kit 12-SP3:zypper in -t patch SUSE-SLE-SDK-12-SP3-2018-1199=1

SUSE Linux Enterprise Server 12-SP3:zypper in -t patch SUSE-SLE-SERVER-12-SP3-2018-1199=1

SUSE Linux Enterprise Live Patching 12-SP3:zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-1199=1

SUSE Linux Enterprise High Availability 12-SP3:zypper in -t patch SUSE-SLE-HA-12-SP3-2018-1199=1

SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2018-1199=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.

Plugin Details

Severity: Medium

ID: 110660

File Name: suse_SU-2018-1772-1.nasl

Version: 1.6

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 6/22/2018

Updated: 9/10/2019

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 5.9

CVSS v2.0

Base Score: 6.8

Temporal Score: 5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

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

CVSS v3.0

Base Score: 7.8

Temporal Score: 6.8

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

Temporal Vector: 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: 6/21/2018

Vulnerability Publication Date: 12/18/2017

Reference Information

CVE: CVE-2017-17741, CVE-2017-18241, CVE-2017-18249, CVE-2018-12233, CVE-2018-3665, CVE-2018-5848