RHEL 8 : kernel-rt (RHSA-2022:5633)
high Nessus Plugin ID 163290
Language:
Synopsis
The remote Red Hat host is missing one or more security updates.Description
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:5633 advisory.- kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check (CVE-2020-29368)
- kernel: cgroup: Use open-time creds and namespace for migration perm checks (CVE-2021-4197)
- kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses (CVE-2021-4203)
- kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012)
- kernel: race condition in perf_event_open leads to privilege escalation (CVE-2022-1729)
- kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-32250)
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 affected packages.See Also
https://access.redhat.com/security/cve/CVE-2020-29368
https://access.redhat.com/security/cve/CVE-2021-4197
https://access.redhat.com/security/cve/CVE-2021-4203
https://access.redhat.com/security/cve/CVE-2022-1012
https://access.redhat.com/security/cve/CVE-2022-1729
https://access.redhat.com/security/cve/CVE-2022-32250
https://access.redhat.com/errata/RHSA-2022:5633
https://bugzilla.redhat.com/1903244
https://bugzilla.redhat.com/2035652
https://bugzilla.redhat.com/2036934
https://bugzilla.redhat.com/2064604
Plugin Details
Severity: High
ID: 163290
File Name: redhat-RHSA-2022-5633.nasl
Version: 1.9
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 7/20/2022
Updated: 1/23/2023
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent
Risk Information
VPR
Risk Factor: Critical
Score: 9.4
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 6.3
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Temporal Vector: E:H/RL:OF/RC:C
CVSS Score Source: CVE-2022-32250
CVSS v3
Risk Factor: High
Base Score: 8.2
Temporal Score: 7.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Temporal Vector: E:H/RL:O/RC:C
CVSS Score Source: CVE-2022-1012
Vulnerability Information
CPE: cpe:/o:redhat:rhel_aus:8.4, cpe:/o:redhat:rhel_e4s:8.4, cpe:/o:redhat:rhel_eus:8.4, cpe:/o:redhat:rhel_tus:8.4, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core, 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-debug-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra
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: 7/19/2022
Vulnerability Publication Date: 11/28/2020
Reference Information
CVE: CVE-2020-29368, CVE-2021-4197, CVE-2021-4203, CVE-2022-1012, CVE-2022-1729, CVE-2022-32250