QID 730660

Date Published: 2022-11-24

QID 730660: Apache Tomcat Local Privilege Escalation Vulnerability (CVE-2020-9484)

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

The fix for bug CVE-2020-9484 introduced a time of check, time of use vulnerability that allowed a local attacker to perform actions with the privileges of the user that the Tomcat process is using. This issue is only exploitable when Tomcat is configured to persist sessions using the FileStore.

Affected versions:
Apache Tomcat 8.5.55 to 8.5.73

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 severity.
  • CVSS V2 rated as Medium - 4.4 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 730660

    CVE-2022-23181 | CVE-2020-9484 |
    Software Advisories
    Advisory ID Software Component Link
    Apache Tomcat URL Logo tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.75
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