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Microsoft Windows Task Scheduler is a set of Microsoft Windows components that allows for the execution of scheduled tasks. The exploit "functions reliably on 32- and 64-bit Windows 10 platforms, as well as Windows Server 2016 and Windows Server 2019.
Task Scheduler is a set of Microsoft Windows components that allows for the execution of scheduled tasks. The front-end components of Task Scheduler, such as schtasks.exe, are interfaces that allow for users to view, create, and modify scheduled tasks. The back-end part of Task Scheduler is a Windows service that runs with SYSTEM privileges. One of the libraries used by the Task Scheduler service, schedsvc.dll, has a function called tsched::SetJobFileSecurityByName(), which sets permissions of job files. The permissions of the job file in the %Windir%\system32\tasks directory are modified to give the calling user full permissions to the job file that they have created.
Public proof-of-concept exploit code leverages the legacy schtasks.exe and schedsvc.dll code from Windows XP to take advantage of these high privilege levels when setting file permissions. Versions of Windows prior to Vista used job files in the %Windir%\tasks directory. Legacy versions of schtasks.exe will cause these jobs to be migrated to the %Windir%\system32\tasks directory when those program versions are executed on modern Windows platforms. In conjunction with the SYSTEM security token used by the Task Scheduler service, this migration behavior can be used along with hard links to grant full permissions of protected files to any user on a Windows system.
By leveraging the Windows Task Scheduler service, an authenticated attacker can gain full access to protected files. This can allow complete system compromise from a limited Windows user account.
To address the issue, the 0patch team “decided to replace self-impersonation with client-impersonation, and to do that, we removed the call to ImpersonateSalfWithPrivilege and injected a call to RpcImpersonateClient in its place.
ESXi Remote Code Execution Vulnerability
Investigation revealed that the vulnerability ESXi versions 6.0, 6.5 and 6.7 running on any platform, and the Horizon cloud desktop-as-a-service (DaaS) platform version 8.x. could be exploited to perform remote code execution.
A vulnerability in the REST API of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network Manager (EPNM) releases prior to 3.0.2 could allow an unauthenticated remote attacker to execute arbitrary code with root privileges on the underlying operating system.
ngCERT Advisory on Scranos Malware
Scranos is a Trojan horse that steals information from the compromised computer. It may also download potentially malicious files. Scranos cloaks itself as cracked software or apps that pose as legitimate programs, such as ebook readers, video players, drivers, and even security products. Upon execution, a rootkit driver is installed to hide the malware.
Millions of computers powered by Intel processors are affected by vulnerabilities that can be exploited by malicious actors to obtain potentially sensitive information. The side-channel attack methods, named ZombieLoad, Rogue In-Flight Data Load,(RIDL) and Fallout, are similar to the notorious Meltdown and Spectre. The attack methods work against both PCs and cloud environments, and they can be launched against most Intel CPUs.
Windows BlueKeep Vulnerability
BlueKeep Vulnerability exists within the Remote Desktop Protocol (RDP) used by the Microsoft Windows Operating Systems (OSs). An attacker can exploit this vulnerability to perform remote code execution on an unprotected system.
ngCERT Advisory 19-years-old WinRAR vulnerability leads to over 100 malware exploits
ngCERT Advisory 19-years-old WinRAR vulnerability leads to over 100 malware exploits
ngCERT Advisory Microsoft Exchange 2013 and Newer are vulnerable to NTLM relay attacks
ngCERT Advisory Microsoft Exchange 2013 and Newer are vulnerable to NTLM relay attacks
