Patching Google Chrome Zero-day Vulnerabilities Using SanerNow


    Two high-severity zero-day vulnerabilities were recently discovered in popular browser, Google Chrome. The use after free and insufficient validation of untrusted input vulnerabilities allows attackers to execute arbitrary code on the affected system.

    CVEs assigned

    Affected software:
    Google Chrome version before 89.0.4389.128.

    To address this vulnerability, the vendor has released security patch. For more information, please refer to our blog
    Use SanerNow platform to apply this high severity patch quickly across the organization as shown below.

    SanerNow: Vulnerability detection and patching of Zero-Day Vulnerabilities (Use after free and Insufficient validation of untrusted input):
    1. Login to SanerNow platform
    2. Switch to the account/site specific view and Go to 'VM tool'
    3. If your Linux Operating System is vulnerable, Saner lists the CVE’s 'CVE-2021-21206' and 'CVE-2021-21220' in 'Top Vulnerabilities' or 'Recently Discovered Vulnerabilities' as shown in the below diagram


    4. Search for this vulnerability in the VM tool. If you are affected, apply the patch through PM -> Missing Patches
    5. Select 'Groups/Devices' in the 'Asset Source' section and click 'Apply'.
    6. Select the 'Google Chrome' product from the 'Asset' section as shown in the below diagram.


    7. Select 'Apply Selected Patches' at the rightmost corner. This will prompt for 'Creating Patching Task'. Fill in 'Task Name' and 'Remediation Schedule' as per your preference and click on 'Apply Selected Patches' as shown below,


    8. Remediation job will be created, which will fix the vulnerability by upgrading the software and making the system immune to Google Chrome vulnerabilities.
    9. Once remediation is done, the Saner agent automatically scans again and upload the result to SanerNow as shown below.


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