Microsoft Internet Explorer 9/10/11 MSHTML Engine command injection

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Microsoft Internet Explorer 9/10/11. This impacts an unknown function of the component MSHTML Engine. This manipulation causes input validation. This vulnerability is handled as CVE-2019-0541. The attack can be initiated remotely. Additionally, an exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability has been found in Microsoft Internet Explorer 9/10/11 (Web Browser) and classified as critical. Affected by this vulnerability is an unknown functionality of the component MSHTML Engine. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 01/08/2019. The weakness was released 01/08/2019 by iDefense with iDEFENSE Labs as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release was coordinated with Microsoft. This vulnerability is known as CVE-2019-0541 since 11/26/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK. The advisory points out:

A remote code execution vulnerability exists in the way that the MSHTML engine inproperly validates input.

After 3 months, there has been an exploit disclosed. It is possible to download the exploit at github.com. It is declared as attacked. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 121011 (KB4480116: Windows 10 Version 1809 and Windows Server 2019 January 2019 Security Update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110328 (Microsoft Office and Microsoft Office Services and Web Apps Security Update January 2019). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 11/03/2021 with a due date of 05/03/2022:

Apply updates per vendor instructions.

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 databases at Exploit-DB (46536), Tenable (121011) and SecurityFocus (BID 106402†). Entries connected to this vulnerability are available at VDB-128717, VDB-128718, VDB-128719 and VDB-128720. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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CPE 2.2info

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VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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CVSSv2info

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Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

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Nessus ID: 121011
Nessus Name: KB4480116: Windows 10 Version 1809 and Windows Server 2019 January 2019 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
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Timelineinfo

11/26/2018 🔍
01/08/2019 +43 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
03/13/2019 +63 days 🔍
03/13/2019 +0 days 🔍
02/07/2025 +2158 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: iDefense
Organization: iDEFENSE Labs
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2019-0541 (🔍)
GCVE (CVE): GCVE-0-2019-0541
GCVE (VulDB): GCVE-100-128731
SecurityFocus: 106402 - Microsoft Internet Explorer CVE-2019-0541 Remote Code Execution Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/08/2019 22:10
Updated: 02/07/2025 18:58
Changes: 01/08/2019 22:10 (84), 05/23/2020 16:54 (7), 06/23/2023 09:21 (4), 04/19/2024 13:58 (27), 09/09/2024 22:29 (1), 02/07/2025 18:58 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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