An elevation of privilege vulnerability exists when the Windows Print Spooler service improperly allows arbitrary writing to the file system. An attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The vulnerability is a win32k window object type confusion leading to an OOB (out-of-bounds) write which can be used to create arbitrary memory read and write capabilities within the Windows kernel to achieve elevated privileges.

A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation giving unprivileged users administrative rights on the target machine.

An elevation of privilege vulnerability exists in Windows when the NTFS component fails to properly handle objects in memory.

An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode, then install programs, view,

change, delete data or create new accounts with full user rights.

This module leverages on a race condition in the Windows kernel using symbolic links to crash the system.



This update adds the CVE number

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.

The Canon TR150 print driver is vulnerable to a privilege escalation issue. During the add printer process an attacker can overwrite a DLL and, if timed properly, the overwritten DLL will be loaded into a SYSTEM process resulting in escalation of privileges.

CVE-2021-40449 is a use-after-free vulnerability in Win32k's NtGdiResetDC function. As with many other Win32k vulnerabilities, the root cause of this vulnerability lies in the ability to set user-mode callbacks and execute unexpected API functions during execution of those callbacks. The CVE-2021-40449 is triggered when the function ResetDC is executed a second time for the same handle during execution of its own callback.

This module leverages on a race condition in the Windows kernel using symbolic links to crash the system.

This module exploits MODAPI.sys in MSI Dragon Center 2.0.104.0 which allows low-privileged users to write an arbitrary value to a Model-Specific Register (MSR) at the specified address.