RHEL 7 : kernel-alt (RHSA-2021:0354)

high Nessus Plugin ID 146055
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VPR Score: 6.7

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-2021:0354 advisory.

- kernel: use-after-free in fs/block_dev.c (CVE-2020-15436)

- kernel: some ipv6 protocols not encrypted over ipsec tunnel (CVE-2020-1749)

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

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://cwe.mitre.org/data/definitions/319.html

https://cwe.mitre.org/data/definitions/416.html

https://cwe.mitre.org/data/definitions/667.html

https://access.redhat.com/security/cve/CVE-2020-1749

https://access.redhat.com/security/cve/CVE-2020-15436

https://access.redhat.com/security/cve/CVE-2020-29661

https://access.redhat.com/errata/RHSA-2021:0354

https://bugzilla.redhat.com/1809833

https://bugzilla.redhat.com/1901168

https://bugzilla.redhat.com/1906525

Plugin Details

Severity: High

ID: 146055

File Name: redhat-RHSA-2021-0354.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2/2/2021

Updated: 3/24/2021

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

Risk Factor: High

VPR Score: 6.7

CVSS Score Source: CVE-2020-29661

CVSS v2.0

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 v3.0

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, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:python-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: 2/2/2021

Vulnerability Publication Date: 4/28/2020

Reference Information

CVE: CVE-2020-1749, CVE-2020-15436, CVE-2020-29661

RHSA: 2021:0354

CWE: 319, 416, 667