Vulnerability Details CVE-2019-9842
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.009
EPSS Ranking 74.0%
CVSS Severity
CVSS v3 Score 7.2
CVSS v2 Score 6.5
References
- https://github.com/madskristensen/MiniBlog/blob/1a7ae45ddba484e2c8f808e288e018748c9ddb57/Website/app_code/handlers/PostHandler.cs#L85
- https://rastating.github.io/miniblog-remote-code-execution/
- https://github.com/madskristensen/MiniBlog/blob/1a7ae45ddba484e2c8f808e288e018748c9ddb57/Website/app_code/handlers/PostHandler.cs#L85
- https://rastating.github.io/miniblog-remote-code-execution/
Products affected by CVE-2019-9842
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cpe:2.3:a:miniblog_project:miniblog:2017-07-02
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cpe:2.3:a:miniblog_project:miniblog:2017-07-21
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cpe:2.3:a:miniblog_project:miniblog:2017-10-26
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cpe:2.3:a:miniblog_project:miniblog:2018-05-18