Microsoft Edge/ChakraCore Scripting Engine memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.9$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Microsoft Edge and ChakraCore and classified as critical. The affected element is an unknown function of the component Scripting Engine. The manipulation leads to memory corruption. This vulnerability is listed as CVE-2018-8459. The attack may be initiated remotely. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Edge and ChakraCore (Web Browser) (the affected version unknown). This issue affects an unknown part of the component Scripting Engine. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The bug was discovered 09/11/2018. The weakness was presented 09/11/2018 by Yu Zhou with Ant-financial Light-Year Security Lab as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The public release was coordinated in cooperation with Microsoft. The identification of this vulnerability is CVE-2018-8459 since 03/14/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/08/2023). The advisory points out:

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user.

The vulnerability scanner Nessus provides a plugin with the ID 117411 (KB4457128: Windows 10 Version 1803 and Windows Server Version 1803 September 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 91471 (Microsoft Edge Security Update for September 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 Tenable (117411) and SecurityFocus (BID 105230†). See VDB-123824, VDB-123826, VDB-123832 and VDB-123836 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

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

Vendor Base Score (Microsoft): 4.2
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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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Nessus ID: 117411
Nessus Name: KB4457128: Windows 10 Version 1803 and Windows Server Version 1803 September 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

03/14/2018 🔍
09/11/2018 +180 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/12/2018 +0 days 🔍
09/12/2018 +0 days 🔍
05/08/2023 +1699 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Yu Zhou
Organization: Ant-financial Light-Year Security Lab
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8459 (🔍)
GCVE (CVE): GCVE-0-2018-8459
GCVE (VulDB): GCVE-100-123833

OVAL: 🔍

SecurityFocus: 105230 - Microsoft ChakraCore Scripting Engine CVE-2018-8459 Remote Memory Corruption Vulnerability
SecurityTracker: 1041623

See also: 🔍

Entryinfo

Created: 09/12/2018 07:19
Updated: 05/08/2023 09:59
Changes: 09/12/2018 07:19 (85), 05/26/2020 14:31 (7), 05/08/2023 09:59 (5)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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