VDB-111558 · CVE-2018-0784 · BID 102377

Microsoft ASP.NET Core 1.0/1.1/2.0 Project Template access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability, which was classified as critical, was found in Microsoft ASP.NET Core 1.0/1.1/2.0. Affected is some unknown processing of the component Project Template Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

ASP.NET Core 1.0. 1.1, and 2.0 allow an elevation of privilege vulnerability due to the ASP.NET Core project templates, aka "ASP.NET Core Elevation Of Privilege Vulnerability". This CVE is unique from CVE-2018-0808.

The bug was discovered 01/09/2018. The weakness was presented 01/09/2018 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. This vulnerability is traded as CVE-2018-0784 since 12/01/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/29/2021). This vulnerability is assigned to T1068 by the MITRE ATT&CK project. The advisory points out:

An elevation of privilege vulnerability exists when a ASP.NET Core web application, created using vulnerable project templates, fails to properly sanitize web requests. An attacker who successfully exploited this vulnerability could perform content injection attacks and run script in the security context of the logged-on user.

The vulnerability scanner Nessus provides a plugin with the ID 105796 (Security Update for ASP.NET Core January 2018), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371131 (ASP.NET Core Elevation Of Privilege Vulnerability).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105796). See 111559 for similar entry.

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CPE 2.3info

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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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NVD Base Score: 8.8
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Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 105796
Nessus Name: Security Update for ASP.NET Core January 2018
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OpenVAS ID: 863080
OpenVAS Name: ASP.NET Core Multiple Vulnerabilities (Windows)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Timelineinfo

12/01/2017 🔍
01/09/2018 +39 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/10/2018 +1 days 🔍
01/13/2018 +3 days 🔍
01/29/2021 +1112 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Kévin Chalet
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0784 (🔍)
SecurityTracker: 1040151
SecurityFocus: 102377 - Microsoft ASP.NET Core CVE-2018-0784 Remote Privilege Escalation Vulnerability

See also: 🔍

Entryinfo

Created: 01/10/2018 14:16
Updated: 01/29/2021 12:20
Changes: 01/10/2018 14:16 (76), 12/28/2019 20:00 (4), 01/29/2021 12:15 (2), 01/29/2021 12:20 (1)
Complete: 🔍

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