MadsKristensen.AspNetCore.Miniblog subject to Improper Input Validation · CVE-2019-9845 · GitHub Advisory Database · GitHub

MadsKristensen.AspNetCore.Miniblog subject to Improper Input Validation

Critical severity GitHub Reviewed Published Jul 5, 2019 to the GitHub Advisory Database • Updated Jan 11, 2023

Package

MadsKristensen.AspNetCore.Miniblog (NuGet)

Affected versions

<= 1.0.3

Patched versions

None

Description

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.

References

Published to the GitHub Advisory Database Jul 5, 2019

Reviewed Jun 16, 2020

Last updated Jan 11, 2023

Severity

Critical

9.8

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H