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

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.9$0-$5k0.00

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.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

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: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

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

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2019-9842 (🔍)
See also: 🔍

Entryinfo

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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