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Inappropriate implementation in V8

High severity GitHub Reviewed Published Dec 1, 2020 in cefsharp/CefSharp • Updated Jun 6, 2023

Package

nuget CefSharp.Common (NuGet)

Affected versions

< 86.0.241

Patched versions

86.0.241
nuget CefSharp.WinForms (NuGet)
< 86.0.241
86.0.241
nuget CefSharp.Wpf (NuGet)
< 86.0.241
86.0.241
nuget CefSharp.Wpf.HwndHost (NuGet)
< 86.0.241
86.0.241

Description

CVE-2020-16009: Inappropriate implementation in V8

Google is aware of reports that exploits for CVE-2020-16009 exist in the wild.

Allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

There is currently little to no public information on the issue other than it has been flagged as High severity.

References

Published by the National Vulnerability Database Nov 3, 2020
@amaitland amaitland published to cefsharp/CefSharp Dec 1, 2020
Reviewed Dec 2, 2020
Published to the GitHub Advisory Database Dec 2, 2020
Last updated Jun 6, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS score

94.577%
(99th percentile)

Weaknesses

CVE ID

CVE-2020-16009

GHSA ID

GHSA-m7mf-48hp-5qmr

Source code

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