madskristensen Miniblog.Core up to 2019-01-16 IMG Element BlogController.cs SaveFilesToDisk Base64 String input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in madskristensen Miniblog.Core up to 2019-01-16. It has been declared as critical. The impacted element is the function SaveFilesToDisk of the file Controllers/BlogController.cs of the component IMG Element Handler. Executing a manipulation as part of Base64 String can lead to input validation. This vulnerability is handled as CVE-2019-9845. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in madskristensen Miniblog.Core up to 2019-01-16. This vulnerability affects the function SaveFilesToDisk of the file Controllers/BlogController.cs of the component IMG Element Handler. The manipulation as part of a Base64 String leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The bug was discovered 03/16/2019. The weakness was released 04/16/2019. This vulnerability was named CVE-2019-9845 since 03/15/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 31 days. During that time the estimated underground price was around $0-$5k.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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 🔍
03/16/2019 +1 days 🔍
04/16/2019 +31 days 🔍
04/17/2019 +1 days 🔍
08/29/2023 +1595 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Not defined

CVE: CVE-2019-9845 (🔍)
GCVE (CVE): GCVE-0-2019-9845
GCVE (VulDB): GCVE-100-133426

Entryinfo

Created: 04/17/2019 07:38
Updated: 08/29/2023 12:03
Changes: 04/17/2019 07:38 (56), 05/30/2020 06:50 (1), 08/29/2023 12:03 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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