openSUSE 15 Security Update : kernel (openSUSE-SU-2021:2645-1)

high Nessus Plugin ID 152459

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Synopsis

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

Description

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:2645-1 advisory.

- An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation. (CVE-2021-22543)

- kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument. (CVE-2021-35039)

- kernel: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609)

- An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3612)

- 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)

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.

Plugin Details

Severity: High

ID: 152459

File Name: openSUSE-2021-2645.nasl

Version: 1.3

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 8/11/2021

Updated: 12/4/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2021-37576

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:kselftests-kmp-azure, p-cpe:/a:novell:opensuse:kernel-azure-optional, p-cpe:/a:novell:opensuse:kernel-source-azure, p-cpe:/a:novell:opensuse:kernel-azure-livepatch-devel, p-cpe:/a:novell:opensuse:cluster-md-kmp-azure, p-cpe:/a:novell:opensuse:kernel-azure-devel, p-cpe:/a:novell:opensuse:kernel-devel-azure, p-cpe:/a:novell:opensuse:kernel-azure-extra, p-cpe:/a:novell:opensuse:gfs2-kmp-azure, p-cpe:/a:novell:opensuse:reiserfs-kmp-azure, p-cpe:/a:novell:opensuse:kernel-azure, cpe:/o:novell:opensuse:15.3, p-cpe:/a:novell:opensuse:ocfs2-kmp-azure, p-cpe:/a:novell:opensuse:kernel-syms-azure, p-cpe:/a:novell:opensuse:dlm-kmp-azure

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/10/2021

Vulnerability Publication Date: 5/26/2021

Reference Information

CVE: CVE-2021-21781, CVE-2021-22543, CVE-2021-35039, CVE-2021-3609, CVE-2021-3612, CVE-2021-3659, CVE-2021-37576

Detections

Analytics