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PHP2Shell: Wie wir einen Tag mit zwei kritischen PHP-Lücken bewältigt haben
Weiterlesen: PHP2Shell: Wie wir einen Tag mit zwei kritischen PHP-Lücken bewältigt habenAm 21. Oktober 2026 wurden zwei kritische Sicherheitslücken in PHP bekannt. CVE-2026-109618 und CVE-2026-109619, besser bekannt als „PHP2Shell“, erreichen einen CVSS-Score von 9,2. Der Patch war für 16 Uhr angekündigt. Ein öffentlicher Proof of Concept tauchte allerdings schon deutlich früher auf. Zwischen „Exploit verfügbar“ und „Patch verfügbar“ lag also ein ganzer Arbeitstag und diese Lücke…
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Extending 3cx with a client side callscript
Weiterlesen: Extending 3cx with a client side callscriptCalling people is an integral component in our day-to-day business, so there must be a quick way of starting calls.In the past, we had an asterisk pbx, which can be operated in a quite flexible way. When we became a 3cx partner, we switched our telephone system from the asterisk to 3cx and obviously, our…
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Sophos XGS Let’s Encrypt
Weiterlesen: Sophos XGS Let’s EncryptThis blog post is split into two parts. Part 1 is the journey to the solution, Part 2 is how to setup our Let’s Encrypt tool on your Sophos firewall. If you are only interested in the latter you can skip ahead. Journey to a working prototype For those that dont know what a Sophos…
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NixOS Ocean Sprint Retrospective
Weiterlesen: NixOS Ocean Sprint Retrospective„It would be nice to escape the cold and rainy weather of German winter“ is something a lot of Germans would say during the cold season of December. So we did. Andy and Janne (which will now be referred as „us“ or „we“) got the honor of being invited to the NixOS Ocean Sprint in…
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Solving the y2038 Problem with NixOS and XFS
Weiterlesen: Solving the y2038 Problem with NixOS and XFSOk, the headline is kind of sensational, but this post does actually talk about how you can make your XFS store files with timestamps after 2038 and how that can be done nicely with NixOS. The Problem The X FileSystem, more commonly known as XFS, has historically only supported timestamps until 2038. However, in version…
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Creating a minimal Windows ISO
Weiterlesen: Creating a minimal Windows ISOSo first off, Hello World! We’re Helsinki Systems and this is our blog about Linux, NixOS, and whatnot. But instead of starting of a stream of Linux posts, let’s start with something slightly different: Creating custom Windows ISOs. Why? Because it’s useful if you live in a world where installing Windows is something you do…
Latest news
- PHP2Shell: Wie wir einen Tag mit zwei kritischen PHP-Lücken bewältigt haben
- Extending 3cx with a client side callscript
- Sophos XGS Let’s Encrypt
- NixOS Ocean Sprint Retrospective
- Solving the y2038 Problem with NixOS and XFS
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