Oracle Linux 8 : kernel (ELSA-2020-1372)

medium Nessus Plugin ID 135378
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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-1372 advisory.

- The Linux kernel before 5.4.1 on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c. (CVE-2019-18660)

- In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via a Facility Unavailable exception. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process because of a missing arch/powerpc/kernel/process.c check. (CVE-2019-15030)

- In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via an interrupt. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process, because MSR_TM_ACTIVE is misused in arch/powerpc/kernel/process.c. (CVE-2019-15031)

- In the Linux kernel before 5.2.10, there is a use-after-free bug that can be caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver, aka CID-9c09b214f30e. (CVE-2019-19527)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2020-1372.html

Plugin Details

Severity: Medium

ID: 135378

File Name: oraclelinux_ELSA-2020-1372.nasl

Version: 1.5

Type: local

Agent: unix

Published: 4/10/2020

Updated: 9/8/2021

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

CVSS Score Source: CVE-2019-19527

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

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

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS:3.0/AV:P/AC:L/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: cpe:2.3:o:oracle:linux:8:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-debug:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-debug-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-headers:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-abi-whitelists:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-tools:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-tools-libs:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-tools-libs-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:perf:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:bpftool:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-core:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-cross-headers:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-debug-core:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-debug-modules:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-debug-modules-extra:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-modules:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-modules-extra:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:python3-perf:*:*:*:*:*:*:*

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 4/9/2020

Vulnerability Publication Date: 9/13/2019

Reference Information

CVE: CVE-2019-15030, CVE-2019-15031, CVE-2019-18660, CVE-2019-19527

RHSA: 2020:1372