Detections
Analytics

Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9452)

high Nessus Plugin ID 180928

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Synopsis

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

Description

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9452 advisory.

 - KVM: do not allow mapping valid but non-reference-counted pages (Nicholas Piggin) [Orabug: 33054089] {CVE-2021-22543} {CVE-2021-22543}
 - Input: joydev - prevent use of not validated data in JSIOCSBTNMAP ioctl (Alexander Larkin) [Orabug:
 33114988] {CVE-2021-3612}
 - KVM: nSVM: always intercept VMLOAD/VMSAVE when nested (Maxim Levitsky) [Orabug: 33234941] {CVE-2021-3656} {CVE-2021-3656}
 - KVM: nSVM: avoid picking up unsupported bits from L2 in int_ctl (Maxim Levitsky) [Orabug: 33234967] {CVE-2021-3653} {CVE-2021-3653}
 - can: bcm: delay release of struct bcm_op after synchronize_rcu() (Thadeu Lima de Souza Cascardo) [Orabug: 33114648] {CVE-2021-3609}
 - can: bcm: fix infoleak in struct bcm_msg_head (Norbert Slusarek) [Orabug: 33030700] {CVE-2021-34693}
 - mac80211: extend protection against mixed key and fragment cache attacks (Wen Gong) {CVE-2020-24586} {CVE-2020-24587}
 - mac80211: drop A-MSDUs on old ciphers (Johannes Berg) {CVE-2020-24588}
 - cfg80211: mitigate A-MSDU aggregation attacks (Mathy Vanhoef) {CVE-2020-24588}
 - mac80211: prevent mixed key and fragment cache attacks (Mathy Vanhoef) {CVE-2020-24587} {CVE-2020-24586}
 - mac80211: assure all fragments are encrypted (Mathy Vanhoef) {CVE-2020-26147}

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-2021-9452.html

Plugin Details

Severity: High

ID: 180928

File Name: oraclelinux_ELSA-2021-9452.nasl

Version: 1.3

Type: local

Agent: unix

Published: 9/7/2023

Updated: 11/2/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2021-3656

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.2

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L

CVSS Score Source: CVE-2021-22543

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel-uek-headers, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:perf, p-cpe:/a:oracle:linux:kernel-uek-devel, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:kernel-uek-tools-libs-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: 9/21/2021

Vulnerability Publication Date: 5/11/2021

Reference Information

CVE: CVE-2020-24586, CVE-2020-24587, CVE-2020-24588, CVE-2020-26147, CVE-2021-22543, CVE-2021-23134, CVE-2021-34693, CVE-2021-3609, CVE-2021-3612, CVE-2021-3653, CVE-2021-3656