RHEL 7 : kernel-rt (RHSA-2021:0857)

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RHEL 7 : kernel-rt (RHSA-2021:0857)

high Nessus Plugin ID 147827

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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 Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0857 advisory.

- kernel: malicious USB devices can lead to multiple out-of-bounds write (CVE-2019-19532)

- kernel: out-of-bounds reads in pinctrl subsystem. (CVE-2020-0427)

- kernel: performance counters race condition use-after-free (CVE-2020-14351)

- kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)

- kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints (CVE-2020-25645)

- kernel: use-after-free in read in vt_do_kdgkb_ioctl (CVE-2020-25656)

- kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705)

- kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)

- kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)

- kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c (CVE-2020-7053)

- kernel: increase slab leak leads to DoS (CVE-2021-20265)

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: 147827

File Name: redhat-RHSA-2021-0857.nasl

Version: 1.7

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 3/17/2021

Updated: 10/7/2021

Dependencies: ssh_get_info.nasl, redhat_repos.nasl, linux_alt_patch_detect.nasl

Risk Information

CVSS Score Source: CVE-2020-29661

VPR

Risk Factor: High

Score: 7.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

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

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: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-kvm

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/16/2021

Vulnerability Publication Date: 12/3/2019

Reference Information

CVE: CVE-2019-19532, CVE-2020-0427, CVE-2020-7053, CVE-2020-14351, CVE-2020-25211, CVE-2020-25645, CVE-2020-25656, CVE-2020-25705, CVE-2020-28374, CVE-2020-29661, CVE-2021-20265

RHSA: 2021:0857

CWE: 20, 119, 200, 319, 330, 400, 416, 667