Patching OpenSSL Crypto Vulnerabilities Using SanerNow


    Two high-severity vulnerabilities were recently revealed to be present in the popular cryptography library, OpenSSL. While one of the vulnerabilities can allow an attacker to bypass CA Certificate checks, the other one could lead to a Denial of Service (DoS) condition.

    CVEs assigned

    Affected software:
    OpenSSL versions 1.1.1 through 1.1.1j are affected.

    To address this vulnerability, the vendor has released security patches. 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 Heap Based Buffer Overflow Vulnerability:
    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-2021-3449' and 'CVE-2021-3450' in 'Top Vulnerabilities' or 'Recently Discovered Vulnerabilities' as shown in the below diagramimage1.PNG
    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 'OpenSSL' 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 OpenSSL 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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