Description
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.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_misc
https://github.com/madskristensen/MiniBlog/blob/1a7ae45ddba484e2c8f808e288e018748c9ddb57/Website/app_code/handlers/PostHandler.cs#L85
Exploit, Third Party Advisory x_refsource_misc
https://rastating.github.io/miniblog-remote-code-execution/
Scores
CVSS v3
7.2
EPSS
0.0081
EPSS Percentile
74.3%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-434
Status
published
Products (1)
miniblog_project/miniblog
< 2018-05-18
Published
Jun 14, 2019
Tracked Since
Feb 18, 2026