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
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.
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.
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.
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
The Remote Desktop Protocol (RDP) and a vulnerability in the implementation of the Server Message Block SMB protocol of Microsoft Windows Operating System is currently being exploited by a ransomware called WannaCry worm. The worm encrypts all files on an infected computer’s hard drive.
Researchers discovered six new vulnerabilities in D-Link wireless cloud routers running their latest firmware. The reported vulnerabilities were found in the DIR-865L model of D-Link routers, which is meant for home network use. There are also likelihood that some of these vulnerabilities are present in newer models of the router because of the similiarities in codebase.
VMware Fusion, VMRC, and Horizon Client contain a local privilege escalation vulnerability due to a Time-of-check Time-of-use (TOC/TOU) issue in the service opener. Furthermore, another local privilege escalation was discovered, which allows the application to blindly executes files from an untrusted location. Both vulnerabilities result in arbitrary code execution as root.
Adobe has released an update for multiple adobe products in Windows, MacOS, and Linux. The updates resolves critical out-of-bounds Read and Write vulnerabilities that could lead to arbitrary code execution and information disclosure.
Researchers discovered numerous critical security vulnerabilities in SaltStack Salt framework – a configuration tool for cloud servers and data centers. Salt is used to monitor and update the state of servers. Each server runs an agent called a "minion" which connects to a "master", a Salt installation that collects state reports from minions and publishes update messages that minions can act on. The vulnerabilities allows attackers to bypass authentication and authorization for arbitrary code execution.
A critical vulnerability was discovered in Cisco Webex Meetings Desktop App which might allow a malicious remote attacker to execute programs on affected end-user system. This vulnerability is caused by improper validation of input that is supplied to application URLs. Also, the attacker could exploit this vulnerability by persuading a user to follow a malicious URL.
A new ransomware known as EvilQuest has been discovered by security researchers. This ransomware was first spotted to be impersonating the Google Software Update program, and on torrent sites, injected in installers wrapping pirated versions of popular macOS software such as Little Snitch, Ableton Live, and Mixed in key. EvilQuest ransomware is discovered to encrypt macOS systems, installs a keylogger and a reverse shell for full control over infected host, and exfiltrates files that contain valuable information (keys to cryptocurrency wallets, code-signing certificates, and many more) with a variety of extensions (eg .pdf, .doc, .jpg, .txt, .pages, .wallet, .zip, etc).
According to Cisco, different categories of vulnerabilities were discovered from different Cisco routers. This vulnerabilities ranges from static default credential, Management interface remote command execution, authentication bypass, arbitrary code execution, and privilege escalation.
Researchers discovered that attackers can access organizations ‘networks through remote access systems to carry out ransomware attack. This is performed through the remote desktop protocol (RDP) and virtual private networks (VPN). The impact of these attacks can be severe on business operations because data are stolen and sold. Also, the recovery from this attacks is very costly to investigate and remediate the compromised network, and restore encrypted files from backup.
Researchers discovered multiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Series Routers and Cisco Small Business RV016, RV042, and RV082 Routers. This vulnerabilities could allow an authenticated, remote attacker with administrative privileges to execute arbitrary commands on an affected device.
Recently, a group of security researchers discovered a new vulnerability named ReVoLTE attack. This vulnerability is due to mobile operators often utilizing similarly encryption key to obtain multiple 4G voice calls that takes place through similarly base station. This vulnerability could allow a malicious attacker to manipulate encrypted content of a recorded Volte call so as to eavesdrop the conversation.
Researchers has discovered critical security risk with Tecno Android phones which has a pre-installed malware called Triada. Malware which signed users up to subscription services without their permission was discovered on thousands of Tecno mobile phones sold in Africa. Anti-fraud firm Upstream found the malicious code on Tecno handsets sold in Ethiopia, Cameroon, Egypt, Ghana and South Africa.