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Rewterz Threat Advisory – CVE-2020-17527 – Apache Tomcat Information Disclosure

Severity

Medium

Analysis Summary

Apache Tomcat could allow a remote attacker to obtain sensitive information, caused by an issue with the HTTP request header value can be reused from the previous stream received on an HTTP/2 connection. By sending a specially-crafted HTTP request, an attacker could exploit this vulnerability to obtain sensitive information, and use this information to launch further attacks against the affected system.

Impact

Information disclosure

Affected Vendors

Apache Tomcat

Affected Products

  • Apache Tomcat 10.0.0 M1
  • Apache Tomcat 8.5.1
  • Apache Tomcat 9.0.0.M5
  • Apache Tomcat 8.5.59
  • Apache Tomcat 9.0.39
  • Apache Tomcat 10.0.0-M9

Remediation

Upgrade to the latest version of Apache Tomcat (8.5.60, 9.0.40, 10.0.0-M10 or later).

http://tomcat.apache.org/

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