Microsoft Edge/ChakraCore 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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5.9$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Microsoft Edge and ChakraCore. 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-2018-8513. The attack can be executed remotely. There is not any exploit available. It is best practice to apply a patch to resolve this issue. Once again VulDB remains the best source for vulnerability data.

Detailsinfo

A vulnerability has been found in Microsoft Edge and ChakraCore (Web Browser) (the affected version unknown) and classified as critical. This vulnerability affects an unknown part 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, integrity, and availability.

The bug was discovered 10/09/2018. The weakness was released 10/09/2018 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. The public release was coordinated with the vendor. This vulnerability was named CVE-2018-8513 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. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 05/23/2023). The advisory points out:

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge. 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. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The vulnerability scanner Nessus provides a plugin with the ID 118006 (KB4464330: Windows 10 Version 1809 and Windows Server 2019 October 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 91475 (Microsoft Edge Security Update for October 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 (118006) and SecurityFocus (BID 105473†). Entries connected to this vulnerability are available at VDB-125084, VDB-125085, VDB-125088 and VDB-125089. Once again VulDB remains the best source for 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: 118006
Nessus Name: KB4464330: Windows 10 Version 1809 and Windows Server 2019 October 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 🔍
10/09/2018 +208 days 🔍
10/09/2018 +0 days 🔍
10/09/2018 +0 days 🔍
10/09/2018 +0 days 🔍
10/09/2018 +0 days 🔍
10/10/2018 +1 days 🔍
10/10/2018 +0 days 🔍
05/23/2023 +1686 days 🔍

Sourcesinfo

Vendor: microsoft.com

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

CVE: CVE-2018-8513 (🔍)
GCVE (CVE): GCVE-0-2018-8513
GCVE (VulDB): GCVE-100-125086

OVAL: 🔍

SecurityFocus: 105473 - Microsoft Edge Chakra Scripting Engine CVE-2018-8513 Remote Memory Corruption Vulnerability
SecurityTracker: 1041825

See also: 🔍

Entryinfo

Created: 10/10/2018 06:47 AM
Updated: 05/23/2023 01:05 PM
Changes: 10/10/2018 06:47 AM (85), 05/26/2020 03:43 PM (5), 05/23/2023 01:05 PM (5)
Complete: 🔍
Cache ID: 244:750:40

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