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CVE-2024-39844: ZNC modtcl RCE


From: Martin Weinelt <martin () linuxlounge net>
Date: Wed, 3 Jul 2024 18:18:36 +0200

Hi,

ZNC before 1.9.1 has a remote code execution vulnerability in its modtcl module, that can for example be triggered through a prepared kick message

https://wiki.znc.in/ChangeLog/1.9.1


Alternatively the following patch needs to be applied to mitigate this vulnerability:

https://github.com/znc/znc/commit/8cbf8d628174ddf23da680f3f117dc54da0eb06e


The vulnerability was discovered and reported by Johannes Kuhn (DasBrain). The patch was created by glguy.


---

Martin


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