Microsoft Edge/ChakraCore Scripting Engine information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Edge and ChakraCore and classified as problematic. The affected element is an unknown function of the component Scripting Engine. Executing a manipulation can lead to information disclosure. This vulnerability appears as CVE-2018-0891. The attack may be performed from remote. In addition, an exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability has been found in Microsoft Edge and ChakraCore (Web Browser) (the affected version is unknown) and classified as problematic. This vulnerability affects an unknown code of the component Scripting Engine. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.

The bug was discovered 03/13/2018. The weakness was presented 03/13/2018 by Ivan Fratric with Google Project Zero as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. This vulnerability was named CVE-2018-0891 since 12/01/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project. The advisory points out:

An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft browsers. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 108288 (KB4088786: Windows 10 March 2018 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 91437 (Microsoft Edge Security Update for March 2018).

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 (44312), Tenable (108288) and SecurityFocus (BID 103309†). See VDB-114501, VDB-114502, VDB-114503 and VDB-114504 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.3
Vendor Vector (Microsoft): 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 108288
Nessus Name: KB4088786: Windows 10 March 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 831303
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4088782)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

12/01/2017 🔍
03/13/2018 +102 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/14/2018 +1 days 🔍
03/14/2018 +0 days 🔍
09/04/2025 +2731 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Ivan Fratric
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0891 (🔍)
GCVE (CVE): GCVE-0-2018-0891
GCVE (VulDB): GCVE-100-114538

OVAL: 🔍

SecurityFocus: 103309 - Microsoft Internet Explorer and Edge CVE-2018-0891 Information Disclosure Vulnerability
SecurityTracker: 1040507

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

Entryinfo

Created: 03/14/2018 11:21
Updated: 09/04/2025 12:38
Changes: 03/14/2018 11:21 (73), 01/13/2020 13:29 (22), 02/04/2021 19:09 (3), 09/04/2025 12:38 (15)
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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