A combination of a path confusion that leads to an authentication bypass (ACL), an elevation of privilege and an arbitrary file write vulnerability, allows unauthenticated attackers to execute commands with SYSTEM privileges in Microsoft Exchange Server.

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 is a critical vulnerability in the MSHTML rendering engine. Microsoft Office applications use the MSHTML engine to process and display web content. An adversary who successfully exploits could achieve full control over a target system by using malicious ActiveX controls to execute arbitrary code.



This Update contains the following improvements:



-Default Connection method was changed to HTTPS

-Early Release Warning was removed

-Several "Application Name" in "Supported systems" property were added

-Added html obfuscation when possible to avoid AV detection

-All file names are randomized

-Now users can choose between using cab file method or not

A path traversal vulnerability in Apache HTTP server may allow an unauthenticated attacker to download system files through specially crafted HTTP resource requests.

A remote code execution vulnerability exists in OMI. An unauthenticated, remote attacker can exploit this flaw by sending a specially crafted request to a vulnerable service over a publicly accessible remote management port.

A reverse proxy bypass vulnerability allows attackers to access restricted endpoints as declared in the analytics-proxy.conf file.

Combined with a unrestricted file upload vulnerability present in the DataAppAgentController class, when using the action=collect parameter, allows attackers to execute systems commands as root.

This is a critical vulnerability in the MSHTML rendering engine. Microsoft Office applications use the MSHTML engine to process and display web content. An adversary who successfully exploits could achieve full control over a target system by using malicious ActiveX controls to execute arbitrary code.

The Lexmark Universal Print Driver version 2.15.1.0 and below, G2 driver 2.7.1.0 and below, G3 driver 3.2.0.0 and below, and G4 driver 4.2.1.0 and below are affected by a privilege escalation vulnerability. A standard low priviliged user can use the driver to execute a DLL of their choosing during the add printer process, resulting in escalation of privileges to SYSTEM.

The eBPF ALU32 bounds tracking for bitwise ops (AND, OR and XOR) in the Linux kernel did not properly update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e ("bpf: Fix alu32 const subreg bound tracking on bitwise operations") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. The AND/OR issues were introduced by commit 3f50f132d840 ("bpf: Verifier, do explicit ALU32 bounds tracking") (5.7-rc1) and the XOR variant was introduced by 2921c90d4718 ("bpf:Fix a verifier failure with xor") ( 5.10-rc1).

The MsIo64.sys driver before 1.1.19.1016 in MSI Dragon Center before 2.0.98.0 has a buffer overflow that allows privilege escalation via a crafted 0x80102040, 0x80102044, 0x80102050, or 0x80102054 IOCTL request.