CVE-2019-9845

madskristensen Miniblog.Core through 2019-01-16 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in Controllers/BlogController.cs writes a decoded base64 string to a file without validating the extension.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 73%
VendorProductVersion
miniblog.core_projectminiblog.core
𝑥
≤ 2019-01-16
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/madskristensen/Miniblog.Core/blob/master/src/Controllers/BlogController.cs#L142
https://rastating.github.io/miniblog-remote-code-execution/
https://github.com/madskristensen/Miniblog.Core/blob/master/src/Controllers/BlogController.cs#L142
https://rastating.github.io/miniblog-remote-code-execution/