QID 352867

Date Published: 2021-11-10

QID 352867: Amazon Linux Security Advisory for Open Secure Sockets Layer (OpenSSL): ALAS2-2021-1721

It was found that openssl assumed asn.1 strings to be nul terminated.
A malicious actor may be able to force an application into calling openssl function with a specially crafted, non-nul terminated string to deliberately hit this bug, which may result in a crash of the application, causing a denial of service attack, or possibly, memory disclosure.
The highest threat from this vulnerability is to data confidentiality and system availability. (
( CVE-2021-3712)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.

  • CVSS V3 rated as High - 7.4 severity.
  • CVSS V2 rated as Medium - 5.8 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2021-1721 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352867

    CVE-2021-3712 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2021-1721 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1721.html
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