QID 352258

Date Published: 2021-04-05

QID 352258: Amazon Linux Security Advisory for openssl11: ALAS2-2021-1622

<DIV> Issue Overview:

A flaw was found in openssl. A server crash and denial of service attack could occur if a client sends a TLSv1.2 renegotiation ClientHello and omits the signature_algorithms extension but includes a signature_algorithms_cert extension. The highest threat from this vulnerability is to system availability. (CVE-2021-3449 )

A flaw was found in openssl. The flag that enables additional security checks of certificates present in a certificate chain was not enabled allowing a confirmation step to verify that certificates in the chain are valid CA certificates is bypassed. The highest threat from this vulnerability is to data confidentiality and integrity. (CVE-2021-3450 )

</DIV>

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 ALAS-2021-1622 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352258

    CVE-2021-3449 | CVE-2021-3450 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS-2021-1622 Amazon Linux 2 openssl11 (1.1.1g-12.amzn2.0.3) on aarch64 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1622.html
    ALAS-2021-1622 Amazon Linux 2 openssl11 (1.1.1g-12.amzn2.0.3) on i686 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1622.html
    ALAS-2021-1622 Amazon Linux 2 openssl11 (1.1.1g-12.amzn2.0.3) on src URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1622.html
    ALAS-2021-1622 Amazon Linux 2 openssl11 (1.1.1g-12.amzn2.0.3) on x86_64 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1622.html
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].