Detections
Analytics
RHEL 7 : kernel (RHSA-2019:1485)
high Nessus Plugin ID 125973
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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-2019:1485 advisory.- Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service (CVE-2019-11477)
- Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service (CVE-2019-11478)
- kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service (CVE-2019-11479)
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-2019:1485.See Also
http://www.nessus.org/u?6f995da6
https://access.redhat.com/security/vulnerabilities/tcpsack
https://bugzilla.redhat.com/show_bug.cgi?id=1719123
https://bugzilla.redhat.com/show_bug.cgi?id=1719128
https://bugzilla.redhat.com/show_bug.cgi?id=1719129
https://access.redhat.com/errata/RHSA-2019:1485
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: High
ID: 125973
File Name: redhat-RHSA-2019-1485.nasl
Version: 1.8
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 6/18/2019
Updated: 4/28/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2019-11477
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS Score Source: CVE-2019-11479
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, cpe:/o:redhat:rhel_tus:7.2, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, cpe:/o:redhat:rhel_aus:7.2, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, cpe:/o:redhat:rhel_e4s:7.2, p-cpe:/a:redhat:enterprise_linux:python-perf, 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 Ease: No known exploits are available
Patch Publication Date: 6/17/2019
Vulnerability Publication Date: 6/19/2019