Detections
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RHEL 7 : kernel (RHSA-2019:2696)
high Nessus Plugin ID 128662
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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-2019:2696 advisory.The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: Memory corruption due to incorrect socket cloning (CVE-2018-9568)
* kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-members (CVE-2018-13405)
* kernel: nfs: use-after-free in svc_process_common() (CVE-2018-16884)
* kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence (CVE-2018-16871)
* kernel: hw: Spectre SWAPGS gadget vulnerability (CVE-2019-1125)
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):
* fragmented packets timing out (BZ#1729411)
* kernel build: speed up debuginfo extraction (BZ#1731462)
* TCP packets are segmented when sent to the VM (TAP) (BZ#1732744)
* TCP packets are segmented when sent to the VLAN device when coming from VXLAN dev. (BZ#1732809)
* skb head copy occurs when sending traffic over OVS managed VXLAN tunnel (BZ#1733626)
* [mlx4] VXLAN over VLAN TCP segmentation (BZ#1734160)
* use make -jN for modules_install (BZ#1735081)
* shmem: consider shm_mnt as a long-term mount (BZ#1737376)
* [ESXi][RHEL7]use-after-free of scsi_cmnd on VMWare virtual guest with vmw_pvscsi and ata_piix (BZ#1737377)
* Backport TCP follow-up for small buffers (BZ#1739127)
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-2019:2696.See Also
https://access.redhat.com/articles/4329821
https://access.redhat.com/errata/RHSA-2019:2696
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=1599161
https://bugzilla.redhat.com/show_bug.cgi?id=1655162
https://bugzilla.redhat.com/show_bug.cgi?id=1655904
https://bugzilla.redhat.com/show_bug.cgi?id=1660375
Plugin Details
Severity: High
ID: 128662
File Name: redhat-RHSA-2019-2696.nasl
Version: 1.10
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 9/11/2019
Updated: 11/7/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2018-9568
CVSS v3
Risk Factor: High
Base Score: 8
Temporal Score: 7.2
Vector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS Score Source: CVE-2018-16884
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-headers, 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, cpe:/o:redhat:rhel_eus:7.4, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, 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: 9/10/2019
Vulnerability Publication Date: 7/6/2018
Reference Information
CVE: CVE-2018-13405, CVE-2018-16871, CVE-2018-16884, CVE-2018-9568, CVE-2019-1125