Microsoft's 0-day protection bypassed, new assessments (Oct. 3, 2022)

Posted on 2022-10-04 by guenni

Exchange Logo[German]A 0-day vulnerability (ZDI-CAN-18333) in Microsoft's on-premises Exchange Servers (2013, 2016, and 2019) has been known since late September 2022. The vulnerabilities (CVE-2022-41040, CVE-2022-41082) are already being exploited in the wild. Microsoft did respond and published a workaround as well as rolled out URI rewrite rules via EMS for protection. But the URI rewrite expressions can be bypassed. In addition, the first (so far fake) exploits are being offered on the Internet. Here is an overview of the latest developments. Continue reading →

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High CPU load, fan on full speed; Windows Defender struggles with Dell SupportAssist

Posted on 2022-10-03 by guenni

Windows[German]Brief information, which I'll cover in this post. Last week a tweet came to my attention in which a Microsoft MVP complained that the fan on his Windows system was running at full speed. A quick look showed that Microsoft Defender was really pulling CPU power on the machine. Could possibly affect one or the other user from the readership. Because the culprits: Windows Defender and Dell SupportAssist might well be in use more often.

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Windows 10/11: Microsoft installs Spotify app without user consent (Sept. 2022)

Posted on 2022-10-02 by guenni

Windows[German]Last week users running Windows 10 or Windows 11 went into trouble. Microsoft decided to install Spotify on many user systems, regardless of whether users wanted it or not. In addition, Spotify starts automatically when Windows is subsequently booted – and annoyed the users with popups. Didn't really go down well for many users.

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Chrome 106.0.5249.91 released

Posted on 2022-10-01 by guenni

Chrome[German]Google has released the Google Chrome 106.0.5249.91 update for Mac and Windows on September 30, 2022. Both the Stable Channel and the Extended Stable Channel will receive this security update. It is a bug fix update that addresses vulnerabilities.

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Update on Exchange Server 0-day Vulnerability ZDI-CAN-18333: Fixes, Scripts and EMS Solution

Posted on 2022-10-01 by guenni

Exchange Logo[German]The 0-day vulnerability ZDI-CAN-18333 in Microsoft's on-premises Exchange Servers (2013, 2016 and 2019) became public at the end of September. The vulnerabilities (CVE-2022-41040, CVE-2022-41082) are already being exploited in the wild. Now Microsoft is rolling out URI rewrite rules via EMS for protection. Furthermore, wrong suggestions in the Microsoft support articles published in the meantime have been amended, and there are scripts for checking and securing Exchange installations. Here is an overview of the latest developments.

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Why ISL Online: Critical factors when choosing a remote desktop solution

[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...

Serious vulnerabilities in Cisco networking hardware (Sept. 2022)

Posted on 2022-10-01 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]Short addendum from this week. The manufacturer Cisco has published extensive security advisories and updates for its network hardware as of September 28, 2022. The updates affect switches and wireless controllers from this manufacturer, among others. Attackers could disrupt the devices or services, or take control. The vulnerabilities are largely classified with the threat level high.

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Windows 11: Printer driver confirmed as upgrade stopper (Sep 29, 2022)

Posted on 2022-10-01 by guenni

Windows[German]Microsoft has acknowledged compatibility problems with the drivers of certain printers under Windows 11 21H2 and 22H2. This can result in the printers only being able to be used with standard printing options. Microsoft has blocked the feature update to Windows 11 version 22H2 on the affected systems.

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Windows 11: Preview-Update KB5017389 (Sept. 30, 2022)

Posted on 2022-10-01 by guenni

Windows[German]Microsoft has released optional cumulative (preview) update KB5017389 for Windows 11 version 22H2 (i.e. not the 21H2) on September 30, 2022. It is the first "servicing" preview update for Windows 11 22H2. Below I provide an overview regarding these updates for Windows 11.

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Mandiant, VMware and US-CERT warn of malware targeting VMware ESXi servers

Posted on 2022-09-30 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]Google-acquired security vendor Mandiant has encountered a new malware family (VirtualPITA, VirtualPIE, and VirtualGATE) that targets virtualization solutions like VMware ESXi Server and uses specialized techniques to infiltrate. VMware has issued a security advisory to that effect, and US-CERT is also warning against this malware.

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Microsoft's recommendations for Exchange Server 0-day vulnerability ZDI-CAN-18333

Posted on 2022-09-30 by guenni

Exchange Logo[German]Last night I had reported on the blog about a 0-day vulnerability ZDI-CAN-18333 in Microsoft's on-premises Exchange Servers, which is already being exploited in the wild. Within hours, Microsoft has now responded and confirmed that they are currently investigating two reported zero-day vulnerabilities (CVE-2022-41040, CVE-2022-41082) affecting Microsoft Exchange Server 2013, 2016 and 2019. At the same time, Microsoft is providing affected administrators with guidance on what to do to protect against these zero-day vulnerabilities until appropriate security updates are available.

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