QID 352800

Date Published: 2021-09-13

QID 352800: Amazon Linux Security Advisory for tomcat8: ALAS-2021-1535

Apache tomcat 10.0.0-m1 to 10.0.6, 9.0.0.m1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the http transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy.
Specifically: - tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an http/1.0 response; - tomcat honoured the identify encoding; and - tomcat did not ensure that, if present, the chunked encoding was the final encoding. (
( CVE-2021-33037)




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 Medium - 5.3 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Please refer to Amazon advisory: ALAS-2021-1535 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352800

    CVE-2021-33037 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS-2021-1535 Amazon Linux URL Logo alas.aws.amazon.com/ALAS-2021-1535.html
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