Detections
Analytics
CentOS 7 : grub2 (CESA-2020:3217)
high Nessus Plugin ID 139236
Language:
Synopsis
The remote CentOS Linux host is missing one or more security updates.Description
The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:3217 advisory.- grub2: Crafted grub.cfg file can lead to arbitrary code execution during boot process (CVE-2020-10713)
- grub2: grub_malloc does not validate allocation size allowing for arithmetic overflow and subsequent heap- based buffer overflow (CVE-2020-14308)
- grub2: Integer overflow in grub_squash_read_symlink may lead to heap-based buffer overflow (CVE-2020-14309)
- grub2: Integer overflow read_section_as_string may lead to heap-based buffer overflow (CVE-2020-14310)
- grub2: Integer overflow in grub_ext2_read_link leads to heap-based buffer overflow (CVE-2020-14311)
- grub2: Fail kernel validation without shim protocol (CVE-2020-15705)
- grub2: Use-after-free redefining a function whilst the same function is already executing (CVE-2020-15706)
- grub2: Integer overflow in initrd size handling (CVE-2020-15707)
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
http://www.nessus.org/u?c42bb45f
http://www.nessus.org/u?c580a639
http://www.nessus.org/u?7da4e0c5
https://cwe.mitre.org/data/definitions/78.html
https://cwe.mitre.org/data/definitions/122.html
https://cwe.mitre.org/data/definitions/190.html
https://cwe.mitre.org/data/definitions/416.html
Plugin Details
Severity: High
ID: 139236
File Name: centos_RHSA-2020-3217.nasl
Version: 1.8
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 7/31/2020
Updated: 2/27/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2020-14309
CVSS v3
Risk Factor: High
Base Score: 8.2
Temporal Score: 7.4
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS Score Source: CVE-2020-10713
Vulnerability Information
CPE: p-cpe:/a:centos:centos:grub2, p-cpe:/a:centos:centos:grub2-common, p-cpe:/a:centos:centos:grub2-efi-ia32, p-cpe:/a:centos:centos:grub2-efi-ia32-cdboot, p-cpe:/a:centos:centos:grub2-efi-ia32-modules, p-cpe:/a:centos:centos:grub2-efi-x64, p-cpe:/a:centos:centos:grub2-efi-x64-cdboot, p-cpe:/a:centos:centos:grub2-efi-x64-modules, p-cpe:/a:centos:centos:grub2-i386-modules, p-cpe:/a:centos:centos:grub2-pc, p-cpe:/a:centos:centos:grub2-pc-modules, p-cpe:/a:centos:centos:grub2-tools, p-cpe:/a:centos:centos:grub2-tools-extra, p-cpe:/a:centos:centos:grub2-tools-minimal, p-cpe:/a:centos:centos:mokutil, p-cpe:/a:centos:centos:shim-ia32, p-cpe:/a:centos:centos:shim-unsigned-ia32, p-cpe:/a:centos:centos:shim-unsigned-x64, p-cpe:/a:centos:centos:shim-x64, cpe:/o:centos:centos:7
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 7/30/2020
Vulnerability Publication Date: 7/29/2020
Reference Information
CVE: CVE-2020-10713, CVE-2020-14308, CVE-2020-14309, CVE-2020-14310, CVE-2020-14311, CVE-2020-15705, CVE-2020-15706, CVE-2020-15707