Detections
Analytics
RHEL 7 : kpatch-patch (RHSA-2021:3814)
high Nessus Plugin ID 154070
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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-2021:3814 advisory.- kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)
- kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)
- kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)
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-2021-22543
https://access.redhat.com/security/cve/CVE-2021-22555
https://access.redhat.com/security/cve/CVE-2021-37576
https://access.redhat.com/errata/RHSA-2021:3814
https://bugzilla.redhat.com/1965461
Plugin Details
Severity: High
ID: 154070
File Name: redhat-RHSA-2021-3814.nasl
Version: 1.10
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 10/13/2021
Updated: 5/24/2023
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment
Risk Information
VPR
Risk Factor: Critical
Score: 9.7
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 6.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2021-37576
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:rhel_e4s:7.6, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_61_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_61_2, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_62_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_65_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_66_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_70_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_72_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_76_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_78_2, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_80_1
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: 10/12/2021
Vulnerability Publication Date: 4/20/2021
Exploitable With
CANVAS (CANVAS)
Core Impact
Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)