QID 730934

Date Published: 2023-10-12

QID 730934: Apache Tomcat Denial of Service Vulnerability (CVE-2023-42794)

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

Tomcat did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy.

Affected versions:
Apache Tomcat 8.5.85 to 8.5.93

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 730934

    CVE-2023-42794 |
    Software Advisories
    Advisory ID Software Component Link
    Apache Tomcat URL Logo tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.94
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