QID 353090

Date Published: 2021-12-27

QID 353090: Amazon Linux Security Advisory for aws-kinesis-agent : ALAS2-2021-1733

A flaw was found in the apache log4j logging library 2.x.
When the logging configuration uses a non-default pattern layout with a context lookup.
Attackers with control over thread context map (mdc) input data can craft malicious input data that contains a recursive lookup and can cause denial of service. (
( CVE-2021-45105)



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.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as Medium - 5.9 severity.
  • CVSS V2 rated as Medium - 4.3 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2021-1733 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 353090

    CVE-2021-45105 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2021-1733 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1733.html
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