Cisco patches vulnerability in IOS XR software

Posted on 2022-05-24 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]Cisco has released last week a patch for a vulnerability in its IOS XR software. The vulnerability, CVE-2022-20821 (CVSS score: 6.5), allows an unauthenticated, remote attacker to connect to a Redis instance and achieve code execution. The vulnerability is already being exploited.

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Windows 10: Update KB5013942 from May 2022 ends with black screen?

Posted on 2022-05-24 by guenni

Windows[German]A quick question to Windows 10 users: I'm receiving more and more reports that the update KB5013942 from May 10, 2022 ends with a a black screen before or after a user login. I'll post a short summary of the error pattern here, and I'd be interested to know if there are others affected – possibly also with other updates from the May 2022 patchday.

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Comparitech acquired by Aura (Hotspot Shield)

Posted on 2022-05-24 by guenni

[German]Another short news item that came to my attention the other day. Comparitech, a British consumer information and comparison site that is also active in the field of security, was taken over in the fall of 2021 by Aura, which on the other hand also bought the provider of Hotspot Shield (from Pango). Here's a quick look at a rather opaque scene.

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Windows 10: Microsoft expands "search highlights" in search area (May 19, 2022)

Posted on 2022-05-23 by guenni

Windows[German]There are indications that Microsoft is extending its "Search Highlights" feature in the search area of the taskbar to significantly more users. In the German as well as in the English blog, I receive user messages that are more than unsettled about this innovation and believe to have "bent" something. Annoyed users, however, have the option to hide this nonsense that Microsoft's developers are once again unleashing on mankind.

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Windows Defender Application Control: Recommended blocking rules (May 2022)

Posted on 2022-05-23 by guenni

Windows[German]In Windows 10 and Windows 11, Windows Defender Application Control (WDAC) and AppLocker are available as features in the enterprise variants (Windows 10/11 Enterprise) as security features (see this post). Now, Microsoft has published a list of recommended blocking rules in mid-May 2022 that I just came across.

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Windows 10 update KB5015019 (5/19/2022) fixes app install error 0xC002001B

Posted on 2022-05-22 by guenni

Windows[German]The April and May 2022 cumulative updates could cause error 0xC002001B to occur on Windows 10 20H2 – 21H2 when installing apps from the Store. In addition, there were cases where the apps stopped launching. Microsoft released unscheduled updates on May 19, 2022 to fix this bug as well. In a deeper wrap-up, I once again summarize some of the information that can be found in various places at Microsoft on this topic.

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Conti ransomware gang stops activities – actors continue to operate

Posted on 2022-05-21 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]A few hours ago, the Conti ransomware gang seems to have officially announced its resolutions and the cessation of all activities. The questions that remain: How long will this last? Will there be a sudden comeback? And do the actors involved in the Conti gang strike out on their own or join other ransomware groups?

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Windows out-of-band updates dated May 19, 2022 fail on AD DC authentication bug in NPS environments

Posted on 2022-05-21 by guenni

Windows[German]Microsoft has released out-of-band updates for supported versions of Windows Server, effective May 19, 2022, to address issues caused by the May 10, 2022 security updates. This includes fixing the Active Directory authentication issue on domain controllers. However, I have since received several reports that the fix does not help, at least in certain constellations with NPS (Network Policy Server).

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Thunderbird 91.9.1

Posted on 2022-05-21 by guenni

[German]In addition to the Firefox developers providing a security update for the Firefox browser (see Firefox 100.0.2 and 91.9.1esr released), wo critical vulnerabilities in the Thunderbird email client have also been fixed with the May 20, 2022 update to version 91.9.1.

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Windows Server 20H2 reaches end of support in August 2022

Posted on 2022-05-21 by guenni

Windows[German]Quick reminder for administrators who support Windows Server 20H2 installations. Microsoft has announced the end of support for this server version for August 9, 2022. After that, Windows Server 20H2 will no longer receive updates. At the same time, the Windows Server Semi-Annual Channel (SAC) will be discontinued (I had already pointed out this plan in 2021 in the post Future Windows Server versions will only be available as LTSC. Windows 10 20H2 has already fallen out of support in May 2022.

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