ProxyNoShell: Mandiant warns of new attack methods on Exchange servers (Nov. 2021)

Posted on 2021-11-20 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]Cyber attackers have been using three known vulnerabilities in Microsoft's Exchange Servers for months, for which updates have been available for months. Despite this, there are around 30,000 Microsoft Exchange Servers accessible via the Internet that are vulnerable to attack via these vulnerabilities. Security researchers have now issued a warning because cyber criminals have changed their tactics to attack systems and install hard-to-detect WebShells there by exploiting three vulnerabilities in on-premises Microsoft Exchange servers, grouped under the name ProxyShell.

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Windows 10/11: Installer issues with app updates or repair

Posted on 2021-11-19 by guenni

Windows[German]Microsoft once again had to admit to a problem that affects both Windows 10 from version 2004 and Windows 11. After installing an update, the MSI installer may cause trouble, as both repairing and updating applications (apps) no longer works. Here is a brief overview of this problem. Addendum: A fix is getting tested with Insiders.

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Thunderbird 91.3.2

Posted on 2021-11-19 by guenni

[German]The developers of the Thunderbird email client have released Thunderbird 91.3.2 as of November 19, 2021. This is a maintenance update for the 91 development branch, which makes numerous fixes and one change. Here's a quick overview.

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Microsoft revealed Vulnerability CVE-2021-42306 in Microsoft Azure AD

Posted on 2021-11-19 by guenni

[German]Microsoft has issued a security alert as of November 17, 2021, disclosing a vulnerability in Microsoft Azure AD. This allows information to be retrieved from the Microsoft Azure Actice Directory (AD).

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Fix for printing error in Windows 10 coming, more Windows printing issues (Nov. 2021)

Posted on 2021-11-19 by guenni

Windows[German]It looks like Microsoft is preparing a fix that should correct printer errors that occur on network printers due to PrintNightmare updates. At least that's what a new Windows 10 Insider Preview tells us. Furthermore, I came across a report from an administrator who is noticing increased printer problems shortly after the November 2021 patchday. His network printers disappear from the dialog boxes.

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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 ...

Structures of Conti ransomware group exposed – payment infrastructure offline

Posted on 2021-11-19 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]The PRODAFT Threat Intelligence (PTI) team has published a new report on the internal structures and inner workings of the Conti ransomware group. They are currently among the most dangerous ransomware criminals. Now, the infrastructure through which the ransomware group receives its ransom payments is said to be offline and shut down.

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WordPress: Sites hacked via plugin, shows fake ransomware claim (Nov. 2021)

Posted on 2021-11-19 by guenni

[German]Currently, some operators of WordPress sites are caught on the wrong foot. The affected WordPress instances show a warning that the site is encrypted. A ransom of 0.1 Bitcoin is demanded for decryption. However, the WordPress instance is not encrypted, but the message is displayed via a compromised plugin.

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iOS 15.1.1 is supposed to eliminate call bugs on iPhone 12 and 13

Posted on 2021-11-18 by guenni

Apple has released the update to iOS 15.1.1 for its iPhones. It is a maintenance update that is supposed to fix user-reported calling issues for the iPhone 12 and iPhone 13. Some users complain about dropped calls on these models. According to the update note, the new version of iOS "improves dropped call performance on iPhone 12 and iPhone 13 models." (via)

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Windows 7: Google Chrome gets support until January 2023

Posted on 2021-11-18 by guenni

[German]Short message for users who are still with Windows 7 SP1 and ESU support, so possibly also receive patches until January 2023. Google has just announced that they will continue to support the Google Chrome browser until 2023 for Windows 7 SP1. Previously, it was planned to phase out Chrome support for Windows 7 next summer. Continue reading →

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CERT-Federation, USA, GB warns about attacks on Exchange and Fortinet

Posted on 2021-11-18 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]German CERT-Bund currently warns against outdated Microsoft Exchange servers. In Germany, thousands of Exchange Servers 2010 with open OWA are still in operation. Security organizations in the United States and the United Kingdom are also sounding the alarm because Iranian hackers are probably attacking Microsoft Exchange servers and Fortinet products. In addition, the US-CERT has added four entries to the list of known exploits. The vulnerabilities can be closed by security updates. 

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