Arbitrary ASPX Code Execution in madskristensen MiniBlog

CVE-2019-9842 · MEDIUM Severity

AV:N/AC:L/AU:S/C:P/I:P/A:P

madskristensen MiniBlog through 2018-05-18 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in app_code/handlers/PostHandler.cs writes a decoded base64 string to a file without validating the extension.

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