Microsoft Internet Explorer 10/11 Chakra Scripting Engine memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Microsoft Internet Explorer 10/11. Impacted is an unknown function of the component Chakra Scripting Engine. Executing a manipulation can lead to memory corruption. This vulnerability is handled as CVE-2018-8145. The attack can be executed remotely. Additionally, an exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as problematic was found in Microsoft Internet Explorer 10/11 (Web Browser). This vulnerability affects an unknown functionality of the component Chakra Scripting Engine. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality.

The bug was discovered 05/08/2018. The weakness was released 05/08/2018 with Microsoft as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release was coordinated with the vendor. This vulnerability was named CVE-2018-8145 since 03/14/2018. 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. The advisory points out:

An information disclosure vulnerability exists when Chakra improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the user’s computer or data.

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 109610 (KB4103726: Windows Server 2012 May 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 100335 (Microsoft Internet Explorer Security Update for May 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 (45011), Tenable (109610) and SecurityFocus (BID 103986†). Entries connected to this vulnerability are available at VDB-117441, VDB-117442, VDB-117443 and VDB-117445. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

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: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 109610
Nessus Name: KB4103726: Windows Server 2012 May 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 52254
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4103725)
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

03/14/2018 🔍
05/08/2018 +55 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
05/09/2018 +0 days 🔍
05/09/2018 +0 days 🔍
09/11/2025 +2682 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Organization: Microsoft
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8145 (🔍)
GCVE (CVE): GCVE-0-2018-8145
GCVE (VulDB): GCVE-100-117496

OVAL: 🔍

SecurityFocus: 103986 - Microsoft ChakraCore Scripting Engine CVE-2018-8145 Remote Memory Corruption Vulnerability
SecurityTracker: 1040844

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

Entryinfo

Created: 05/09/2018 14:59
Updated: 09/11/2025 08:12
Changes: 05/09/2018 14:59 (88), 02/03/2020 15:01 (9), 03/11/2023 09:56 (6), 09/11/2025 08:12 (15)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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