CentOS: Security Advisory for mokutil (CESA-2020:3217)

Published: 2020-07-30 03:01:19
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:

The remote host is missing an update for the 'mokutil' Linux Distribution Package(s) announced via the CESA-2020:3217 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
The grub2 Linux Distribution Packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The Linux Distribution Packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. The shim Linux Distribution Package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments. The fwupdate Linux Distribution Packages provide a service that allows session software to update device firmware. Security Fix(es): * 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) 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): * grub2 doesn't handle relative paths correctly for UEFI HTTP Boot (BZ#1616395) * UEFI HTTP boot over IPv6 does not work (BZ#1732765) Users of grub2 are advised to upgrade to these updated Linux Distribution Packages, which fix these bugs.

Affected Versions:
'mokutil' Linux Distribution Package(s) on CentOS 7.

Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)




CVSS Score
CentOS Local Security Checks

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