CVE-2020-15999 vulnerability in Freetype and Other Products
Published on November 3, 2020
Known Exploited Vulnerability
This Google Chrome FreeType Memory Corruption vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
The following remediation steps are recommended / required by November 17, 2021: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2020-15999 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Classic Buffer Overflow Vulnerability?
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
CVE-2020-15999 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2020-15999
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Affected Versions
Google Chrome:- Version unspecified and below 86.0.4240.111 is affected.
Vulnerable Packages
The following package name and versions may be associated with CVE-2020-15999
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| nuget | CefSharp.Common | < 85.3.130 | 85.3.130 |
| nuget | CefSharp.Wpf | < 85.3.130 | 85.3.130 |
| nuget | CefSharp.WinForms | < 85.3.130 | 85.3.130 |
| nuget | CefSharp.Wpf.HwndHost | < 85.3.130 | 85.3.130 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.