Microsoft Edge/ChakraCore Chakra Scripting Engine memory corruption

A vulnerability was found in Microsoft Edge and ChakraCore (Web Browser) (unknown version). It has been rated as critical. This issue affects an unknown code of the component Chakra Scripting Engine. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. Impacted is confidentiality, integrity, and availability.

The weakness was shared 07/09/2019 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The vendor cooperated in the coordination of the public release. The identification of this vulnerability is CVE-2019-1106. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/09/2019). 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.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entries 137520, 137518, 137517 and 137516 are related to this item.

Type

• Web Browser

Vendor

• Microsoft

Name

• ChakraCore
• Edge

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VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

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

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

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Memory corruption (CWE-119)
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍Recommended: Patch
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

07/09/2019 Advisory disclosed
07/09/2019 +0 days Countermeasure disclosed
07/09/2019 +0 days VulDB entry created
07/09/2019 +0 days VulDB last updateVendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed
Coordinated: 🔒

CVE: CVE-2019-1106 (🔒)
See also: 🔒

Created: 07/09/2019 09:45 PM
Complete: 🔍

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