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Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2020-5996)

high Nessus Plugin ID 144210

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Synopsis

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

Description

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5996 advisory.

 - vt: Disable KD_FONT_OP_COPY (Daniel Vetter) [Orabug: 32187738] {CVE-2020-28974}
 - Fonts: Support FONT_EXTRA_WORDS macros for built-in fonts (Peilin Ye) [Orabug: 32176254] {CVE-2020-28915}
 - fbdev, newport_con: Move FONT_EXTRA_WORDS macros into linux/font.h (Peilin Ye) [Orabug: 32176254] {CVE-2020-28915}
 - xen/events: block rogue events for some time (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/events: defer eoi in case of excessive number of events (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/events: use a common cpu hotplug hook for event channels (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/events: switch user event channels to lateeoi model (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/pciback: use lateeoi irq binding (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/pvcallsback: use lateeoi irq binding (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/scsiback: use lateeoi irq binding (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/netback: use lateeoi irq binding (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/blkback: use lateeoi irq binding (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/events: add a new 'late EOI' evtchn framework (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/events: fix race in evtchn_fifo_unmask() (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - xen/events: add a proper barrier to 2-level uevent unmasking (Juergen Gross) [Orabug: 32177535] {CVE-2020-27673}
 - perf/core: Fix a memory leak in perf_event_parse_addr_filter() (kiyin) [Orabug: 32131172] {CVE-2020-25704}
 - vt: keyboard, extend func_buf_lock to readers (Jiri Slaby) [Orabug: 32122948] {CVE-2020-25656} {CVE-2020-25656}
 - vt: keyboard, simplify vt_kdgkbsent (Jiri Slaby) [Orabug: 32122948] {CVE-2020-25656}
 - tty: make FONTX ioctl use the tty pointer they were actually passed (Linus Torvalds) [Orabug: 32122725] {CVE-2020-25668}
 - Bluetooth: A2MP: Fix not initializing all members (Luiz Augusto von Dentz) [Orabug: 32021285] {CVE-2020-12352}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues 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-2020-5996.html

Plugin Details

Severity: High

ID: 144210

File Name: oraclelinux_ELSA-2020-5996.nasl

Version: 1.8

Type: local

Agent: unix

Published: 12/14/2020

Updated: 10/22/2024

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

CVSS Score Source: CVE-2020-25668

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

Vector: CVSS:3.0/AV:L/AC:H/PR:L/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:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:perf, cpe:/o:oracle:linux:7, cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:kernel-uek-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:python-perf, p-cpe:/a:oracle:linux:kernel-uek-tools, p-cpe:/a:oracle:linux:kernel-uek-tools-libs, p-cpe:/a:oracle:linux:kernel-uek, p-cpe:/a:oracle:linux:kernel-uek-debug

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/15/2020

Vulnerability Publication Date: 10/15/2020

Reference Information

CVE: CVE-2020-12352, CVE-2020-25656, CVE-2020-25668, CVE-2020-25704, CVE-2020-27673, CVE-2020-28915, CVE-2020-28974, CVE-2020-8694, CVE-2020-8695