Oracle Linux 8 : kernel (ELSA-2021-3447)

high Nessus Plugin ID 153109
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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-2021-3447 advisory.

- arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e. (CVE-2021-37576)

- net/sunrpc/xdr.c in the Linux kernel before 5.13.4 allows remote attackers to cause a denial of service (xdr_set_page_base slab-out-of-bounds access) by performing many NFS 4.2 READ_PLUS operations.
(CVE-2021-38201)

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-2021-3447.html

Plugin Details

Severity: High

ID: 153109

File Name: oraclelinux_ELSA-2021-3447.nasl

Version: 1.2

Type: local

Agent: unix

Published: 9/8/2021

Updated: 9/8/2021

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

CVSS Score Source: CVE-2021-37576

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: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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-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:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-abi-stablelists:*:*:*:*:*:*:*

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: 9/8/2021

Vulnerability Publication Date: 7/26/2021

Reference Information

CVE: CVE-2021-37576, CVE-2021-38201