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Hello,
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<div>I hope everyone is doing well!</div>
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<div>Below is the entry for today.</div>
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<div>04/11/2022 - Diary entry #489:</div>
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<div>On March 31 this year, a remote code execution (RCE) vulnerability was disclosed affecting another Java-based application logging library. Tracked as CVE-2022-22965 and named Spring4Shell, it affects any system using JDK 9.0 or later and using the Spring
Framework versions 5.3.0 to 5.3.17, 5.2.0 to 5.2.19, and earlier versions.
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<div>Before the vulnerability became public, some activities were already spotted exploring it like some webshells. Less than one day after, a variant of Mirai Botnet - already covered by many of our Daily Diaries - has been observed targeting Spring4Shell
in vulnerable systems to download and execute the malware.</div>
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<div>Since Spring4Shell exploit is as easy to exploit as Log4Shell (covered in Daily Diary #414), it was a matter of time to see threat actors exploring it on large scale. Spring4Shell has also a huge attack surface, with some estimations saying that 16% of
organizations around the world, especially the software industry, were impacted.</div>
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Therefore, we recommend all organizations using Java applications to keep their systems up-to-date and perform frequent pentest/red team assessments to prepare and protect against real-life scenarios.<br>
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Kind Regards,<br>
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<td colspan="3" align="center"><a href="https://www.appgate.com/" target="_blank" rel="noopener noreferrer" style="margin:0px"><img style="margin:0px" width="120" height="30" src="https://d3aafpijpsak2t.cloudfront.net/images/Signature/logo@2x.png"></a></td>
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<p style="color:rgb(12,12,12); font-size:13px; font-family:Arial,Helvetica,sans-serif; margin-top:0px; margin-bottom:0px">
<strong>Felipe Tarijon de Almeida</strong><br>
Malware Analyst<br>
<strong>Appgate</strong></p>
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E:<span style="margin:0px"> <a href="mailto:felipe.tarijon@appgate.com" title="mailto:felipe.tarijon@appgate.com">
felipe.tarijon@appgate.com</a></span><br>
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