CVE-2019-5778 : Security Advisory and Response
Learn about CVE-2019-5778, a vulnerability in Google Chrome versions before 72.0.3626.81 that allowed attackers to bypass extension permission checks for privileged pages by tricking users into installing a malicious extension.
In Google Chrome versions prior to 72.0.3626.81, a vulnerability allowed attackers to bypass extension permission checks for privileged pages by tricking users into installing a malicious extension.
Understanding CVE-2019-5778
In January 2019, CVE-2019-5778 was published, highlighting a flaw in Google Chrome's permission request checks for Extensions.
What is CVE-2019-5778?
The vulnerability in Google Chrome versions before 72.0.3626.81 enabled attackers to bypass extension permission checks for privileged pages by exploiting a flaw in handling special schemes.
The Impact of CVE-2019-5778
This vulnerability allowed attackers to deceive users into installing a malicious extension, granting them unauthorized access to privileged pages through a carefully crafted Chrome Extension.
Technical Details of CVE-2019-5778
Google Chrome's vulnerability CVE-2019-5778 can be further understood through the following technical details:
Vulnerability Description
A missing case for handling special schemes in permission request checks in Extensions in Google Chrome prior to 72.0.3626.81 allowed attackers to bypass extension permission checks for privileged pages via a crafted Chrome Extension.
Affected Systems and Versions
- Product: Chrome
- Vendor: Google
- Versions Affected: < 72.0.3626.81
Exploitation Mechanism
Attackers exploited the flaw by tricking users into installing a malicious extension, thereby bypassing extension permission checks for privileged pages.
Mitigation and Prevention
To address CVE-2019-5778, consider the following mitigation strategies:
Immediate Steps to Take
- Update Google Chrome to version 72.0.3626.81 or higher to mitigate the vulnerability.
- Be cautious when installing extensions and only use trusted sources.
Long-Term Security Practices
- Regularly update Chrome and all installed extensions to the latest versions.
- Educate users on safe browsing practices and the risks associated with installing unverified extensions.
Patching and Updates
Ensure timely installation of security patches and updates provided by Google Chrome to address known vulnerabilities.