CVE-2019-9845

EUVD-2019-0586
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
NISTPrimary
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 74%
Affected Products (NVD)
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/