RHEL 7 : kernel (RHSA-2020:5437)

high Nessus Plugin ID 144404

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Synopsis

The remote Red Hat host is missing one or more security updates for kernel.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:5437 advisory.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385)

* kernel: The flow_dissector feature allows device tracking (CVE-2019-18282)

* kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned. (CVE-2020-10769)

* kernel: buffer uses out of index in ext3/4 filesystem (CVE-2020-14314)

* kernel: umask not applied on filesystem without ACL support (CVE-2020-24394)

* kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212)

* kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow (CVE-2020-25643)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

* WARNING in set_restore_sigmask at ./arch/x86/include/asm/thread_info.h:298 sigsuspend+0x6d/0x70 (BZ#1704650)

* [i40e] VFs see other VF's outgoing traffic (BZ#1845677)

* [Hyper-V][RHEL7] Two fixes for kdump over network (BZ#1846667)

* Loop in __run_timers() because base->timer_jiffies is very far behind causes a lockup condition.
(BZ#1849716)

* XFS transaction overrun when running docker on VMWARE (overlay fs) (BZ#1857203)

* RHEL 7.9 NVMe/IB - Host crash encountered during array upgrade (BZ#1857397)

* False positive hard lockup detected while disabling the hard lockup detector via sysctl -w kernel.watchdog=0 (BZ#1860661)

* [Hyper-V][RHEL-7] Only notify Hyper-V for die events that are oops (BZ#1868130)

* Linux kernel crash due to openvswitch module (BZ#1869190)

* 'nodfs' option not working when using SMB2+ (BZ#1873033)

* RHEL7.7 zstream - ESS - kernel panic triggered by freelist pointer corruption (BZ#1873189)

* destroy_cfs_bandwidth() is called by free_fair_sched_group() without calling init_cfs_bandwidth() (BZ#1878000)

* NULL pointer at nvme_rdma_setup_ctrl+0x1c2/0x8d0 [nvme_rdma] when discover E5700 (BZ#1878950)

* IB Infiniband RDMA mlx5_ib is freeing a kmalloc-512 cache that it does not own causing memory corruption. (BZ#1880184)

* [Azure][RHEL7] Two Patches Needed To Enable Azure Host Time-syncing in VMs (BZ#1884735)

* connect AF_UNSPEC on a connecting AF_INET6 socket returns an error (BZ#1886305)

* Rebuilding the grub with the CPU flag 'avx' disabled (clearcpuid=156) triggers kernel panic in xor_avx_2() (BZ#1886792)

* nf_conntrack_sctp.h is not usable due to a missing commit (BZ#1887975)

* Starting pvmove on top of physical volumes on MD devices causes IO error on ongoing IO (BZ#1890059)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 RHEL kernel package based on the guidance in RHSA-2020:5437.

Plugin Details

Severity: High

ID: 144404

File Name: redhat-RHSA-2020-5437.nasl

Version: 1.11

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 12/18/2020

Updated: 11/8/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:C

CVSS Score Source: CVE-2020-25643

CVSS v3

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:H/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:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel-tools, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:perf

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: 12/15/2020

Vulnerability Publication Date: 1/16/2020

Reference Information

CVE: CVE-2019-18282, CVE-2020-10769, CVE-2020-14314, CVE-2020-14385, CVE-2020-24394, CVE-2020-25212, CVE-2020-25643

CWE: 119, 125, 131, 20, 200, 367, 732

RHSA: 2020:5437

Detections

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