Security News
During the second day of the Pwn2Own Vancouver 2022 hacking competition, contestants hacked Microsoft's Windows 11 OS again and demoed zero-days in Tesla Model 3's infotainment system. A third elevation of privileges zero-day caused by an improper access control bug in Windows 11 was demoed on the second day by T0, with namnp failing to demonstrate a second Windows 11 privilege escalation zero-day within the time allotted.
Microsoft has released emergency out-of-band updates to address Active Directory authentication issues after installing Windows Updates issued during the May 2022 Patch Tuesday on domain controllers. "After installing updates released May 10, 2022 on your domain controllers, you might see authentication failures on the server or client for services such as Network Policy Server, Routing and Remote access Service, Radius, Extensible Authentication Protocol, and Protected Extensible Authentication Protocol," Microsoft explained.
During the first day of Pwn2Own Vancouver 2022, contestants won $800,000 after successfully exploiting 16 zero-day bugs to hack multiple products, including Microsoft's Windows 11 operating system and the Teams communication platform. The first to fall was Microsoft Teams in the enterprise communications category after Hector Peralta exploited an improper configuration flaw.
Microsoft has released the first ISO image for the new Windows 11 Preview builds in the Dev channel, allowing Windows Insiders to perform clean installs of the operating system. Last week, Microsoft again started offering different Windows 11 builds in the 'Dev' and 'Beta' channels, with the beta channel receiving Windows 11 build 22621 and the Dev channel receiving Windows 11 build 25115.
The rules of Pwn2Own are somewhat strange, given that some entrants may end up not actually competing at all. The Tesla hackers, plus the browser and virtualisation entrants, will all definitely get a turn, because they're the only competitors in their categories.
The latest variant of the Sysrv botnet malware is menacing Windows and Linux systems with an expanded list of vulnerabilities to exploit, according to Microsoft. The strain, which Microsoft's Security Intelligence team calls Sysrv-K, scans the internet for web servers that have security holes, such as path traversal, remote file disclosure, and arbitrary file download bugs, that can be exploited to infect the machines.
Microsoft has reminded customers today that Windows Server, version 20H2, will be reaching the end of service on August 9, 2022. In a support document published today, Microsoft says that Windows Server 20H2 will reach the mainstream support end date for Datacenter Core and Standard Core users.
NVIDIA has released a security update for a wide range of graphics card models, addressing four high-severity and six medium-severity vulnerabilities in its GPU drivers. The security update fixes vulnerabilities that can lead to denial of service, information disclosure, elevation of privileges, code execution, etc.
Unpatched vulnerabilities in the Spring Framework and WordPress plugins are being exploited by cybercriminals behind the Sysrv botnet to target Linux and Windows systems. The botnet variant is being called Sysrv-K by Microsoft Security Intelligence researchers that posted a thread on Twitter revealing details of the botnet variant.
Microsoft is warning of a new variant of the srv botnet that's exploiting multiple security flaws in web applications and databases to install coin miners on both Windows and Linux systems. The tech giant, which has called the new version Sysrv-K, is said to weaponize an array of exploits to gain control of web servers.