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CVE-2018-16068: Google Chrome: Improper Input Validation

CVE-2018-16068 is rated critical with a CVSS v3.0 base score of 9.6 and affects Google Chrome, along with 4 other products in NVD’s configuration data. Per its scoring, it can be exploited over the network, without authentication. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Missing validation in Mojo in Google Chrome prior to 69.0.3497.81 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.

Severity breakdown

CVSS v3.0 9.6: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
Attack complexity: Low. No special conditions; the attack can be repeated reliably.
Privileges required: None. No account or prior access is needed.
User interaction: Required. A user must take an action, such as opening a file or following a link.
Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-20: Improper Input Validation

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.

Affected products

Google Chrome: before 69.0.3497.81
Debian Linux: 9.0
Red Hat Enterprise Linux Desktop: 6.0
Red Hat Enterprise Linux Server: 6.0
Red Hat Enterprise Linux Workstation: 6.0