madskristensen MiniBlog up to 2018-05-18 IMG Element PostHandler.cs unrestricted upload

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability classified as critical was found in madskristensen MiniBlog up to 2018-05-18. This vulnerability affects an unknown functionality of the file app_code/handlers/PostHandler.cs of the component IMG Element Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was disclosed 06/14/2019. This vulnerability was named CVE-2019-9842 since 03/15/2019. The exploitation appears to be easy. The attack can be initiated remotely. The successful exploitation needs a single authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1608.002 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-97817, VDB-104499, VDB-107422 and VDB-120260 are pretty similar.





CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.7
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


03/15/2019 🔍
06/14/2019 +91 days 🔍
06/15/2019 +1 days 🔍
10/05/2023 +1573 days 🔍


Status: Not defined

CVE: CVE-2019-9842 (🔍)
See also: 🔍


Created: 06/15/2019 01:10 PM
Updated: 10/05/2023 02:00 PM
Changes: 06/15/2019 01:10 PM (36), 06/24/2020 04:36 PM (17), 10/05/2023 02:00 PM (3)
Complete: 🔍
Cache ID: 44:B8A:40


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