QID 730811

Date Published: 2023-05-23

QID 730811: Apache Tomcat Denial of Service (DoS) Vulnerability (CVE-2023-28709)

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

The fix for CVE-2023-24998 was incomplete. If non-default HTTP connector settings were used such that the maxParameterCount could be reached using query string parameters and a request was submitted that supplied exactly maxParameterCount parameters in the query string, the limit for uploaded request parts could be bypassed with the potential for a denial of service to occur.

Affected versions:
Apache Tomcat 9.0.71 to 9.0.73

QID Detection Logic (Unauthenticated):
This QID sends a HTTP GET request to an invalid URL and based on the response confirms the vulnerable instance of Apache Tomcat running on the host.

Successful exploitation of this vulnerability could reveal sensitive information to an unauthorized attacker.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Customers are advised to upgrade Apache Tomcat to the new version to remediate this vulnerability. For more information please refer to Apache Tomcat Security Advisory.

    Vendor References

    CVEs related to QID 730811

    CVE-2023-28709 |
    Software Advisories
    Advisory ID Software Component Link
    Apache Tomcat URL Logo tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.74
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