QID 730041

Date Published: 2021-04-15

QID 730041: Apache Tomcat Duplicate Request Headers Vulnerabilities

Apache Tomcat is an open source web server and servlet container developed by the Apache Software Foundation.

CVE-2021-25122: When responding to new h2c connection requests, Apache Tomcat could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.

Affected Versions:
Apache Tomcat 9.0.0.M1 to 9.0.41

QID Detection Logic (Unauthenticated):
The QID checks for vulnerable version by sending a GET /QUALYS13827 HTTP/1.0 request which helps in retrieving the installed version of Apache Tomcat in the banner of the response.

Apache Tomcat could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Upgrade to the Apache Tomcat 9.0.43 or to the latest version of Apache Tomcat. Please refer to Apache Tomcat Website.

    Vendor References

    CVEs related to QID 730041

    CVE-2021-25122 |
    Software Advisories
    Advisory ID Software Component Link
    Fixed_in_Apache_Tomcat_9.0.43 URL Logo tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.43
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