Google Chrome prior 69.0.3497.92 WebAssembly HTML Page input validation

Summaryinfo

A vulnerability was found in Google Chrome and classified as critical. The impacted element is an unknown function of the component WebAssembly. The manipulation as part of HTML Page results in input validation. This vulnerability is identified as CVE-2018-17458. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Google Chrome (Web Browser). Affected is an unknown code of the component WebAssembly. The manipulation as part of a HTML Page leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An improper update of the WebAssembly dispatch table in WebAssembly in Google Chrome prior to 69.0.3497.92 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

The bug was discovered 09/11/2018. The weakness was released 01/09/2019 (Website). The advisory is shared for download at access.redhat.com. This vulnerability is traded as CVE-2018-17458 since 09/25/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 06/23/2023). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 117784 (RHEL 6 : chromium-browser (RHSA-2018:2818)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236981 (Red Hat Update for chromium-browser (RHSA-2018:2818)).

Upgrading to version 69.0.3497.92 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (117784). Entry connected to this vulnerability is available at VDB-128917. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Google

Name

• Chrome

License

• free

Website

• Vendor: https://www.google.com/
• Product: https://www.google.com/chrome/

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Once again VulDB remains the best source for vulnerability data.

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