Critical severity · published Apr 16, 2019
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…
9.8
CVSS
2.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
Miniblog.core · Miniblog.core Project
through 2019-01-16 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-9845
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9845
Third Party Advisory
https://github.com/madskristensen/Miniblog.Core/blob/master/src/Controllers/BlogController.cs#L142
Exploit
https://rastating.github.io/miniblog-remote-code-execution/
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