Microsoft: >> Windows 10 >> 1903 Security Vulnerabilities
An information disclosure vulnerability exists on ARM implementations that use speculative execution in control flow via a side-channel analysis, aka "straight-line speculation."
To exploit this vulnerability, an attacker with local privileges would need to run a specially crafted application.
The security update addresses the vulnerability by bypassing the speculative execution.
CVSS Score
7.5
EPSS Score
0.061
Published
2020-08-17
An elevation of privilege vulnerability exists when Windows improperly handles hard links. An attacker who successfully exploited this vulnerability could overwrite a targeted file leading to an elevated status.
To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.
The security update addresses the vulnerability by correcting how Windows handles hard links.
CVSS Score
10.0
EPSS Score
0.019
Published
2020-08-17
GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions.
CVSS Score
6.4
EPSS Score
0.0
Published
2020-07-29
GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.
CVSS Score
6.4
EPSS Score
0.001
Published
2020-07-29
Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.
CVSS Score
5.7
EPSS Score
0.0
Published
2020-07-29
A remoted code execution vulnerability exists in the way that Microsoft Windows Codecs Library handles objects in memory, aka 'Microsoft Windows Codecs Library Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-1457.
CVSS Score
7.8
EPSS Score
0.261
Published
2020-07-27
A remote code execution vulnerability exists in the way that Microsoft Windows Codecs Library handles objects in memory, aka 'Microsoft Windows Codecs Library Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-1425.
CVSS Score
7.8
EPSS Score
0.166
Published
2020-07-27
An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arbitrary locations.To exploit the vulnerability, an attacker would first have to log on to the system, aka 'Microsoft Defender Elevation of Privilege Vulnerability'.
CVSS Score
7.1
EPSS Score
0.002
Published
2020-07-14
An information disclosure vulnerability exists when Skype for Business is accessed via Microsoft Edge (EdgeHTML-based), aka 'Skype for Business via Microsoft Edge (EdgeHTML-based) Information Disclosure Vulnerability'.
CVSS Score
4.3
EPSS Score
0.128
Published
2020-07-14
An elevation of privilege vulnerability exists in the way that the SharedStream Library handles objects in memory, aka 'Windows SharedStream Library Elevation of Privilege Vulnerability'.
CVSS Score
7.8
EPSS Score
0.003
Published
2020-07-14