SUSE SLES12 / SLES15 Security Update : kernel (Live Patch 16 for SLE 15 SP2) (SUSE-SU-2021:2746-1)

high Nessus Plugin ID 152652

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Synopsis

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

Description

The remote SUSE Linux SLES12 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2746-1 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: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609)

- 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.

See Also

https://bugzilla.suse.com/1186483

https://bugzilla.suse.com/1188323

https://bugzilla.suse.com/1188842

http://www.nessus.org/u?9e23bc10

https://www.suse.com/security/cve/CVE-2021-22543

https://www.suse.com/security/cve/CVE-2021-3609

https://www.suse.com/security/cve/CVE-2021-37576

Plugin Details

Severity: High

ID: 152652

File Name: suse_SU-2021-2746-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 8/18/2021

Updated: 8/18/2021

Supported Sensors: Nessus Agent

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

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

CVSS Score Source: CVE-2021-37576

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: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kernel-livepatch-4_12_14-150_72-default, p-cpe:/a:novell:suse_linux:kernel-livepatch-4_12_14-197_92-default, p-cpe:/a:novell:suse_linux:kernel-livepatch-5_3_18-24_70-default, p-cpe:/a:novell:suse_linux:kernel-livepatch-5_3_18-59_16-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_12_14-122_77-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_12_14-95_77-default, cpe:/o:novell:suse_linux:12, cpe:/o:novell:suse_linux:15

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/17/2021

Vulnerability Publication Date: 5/26/2021

Reference Information

CVE: CVE-2021-3609, CVE-2021-22543, CVE-2021-37576

SuSE: SUSE-SU-2021:2746-1