GLSA 202012-23: Apache Tomcat: Information disclosure

http://security.gentoo.org/

Severity:	low
Title:	Apache Tomcat: Information disclosure
Date:	12/24/2020
Bugs:	#758338
ID:	202012-23

Synopsis

A vulnerability has been discovered in Apache Tomcat that allows for the disclosure of sensitive information.

Background

Apache Tomcat is a Servlet-3.0/JSP-2.2 Container.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
www-servers/tomcat	< 8.5.60	>= 8.5.60	All supported architectures

Description

It was discovered that Apache Tomcat could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream.

Impact

A remote attacker, by sending well-timed HTTP/2 requests, could possibly obtain sensitive information.

Workaround

Disable HTTP/2 support.

Resolution

All Apache Tomcat 8.5.x users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=www-servers/tomcat-8.5.60:8.5"

All Apache Tomcat 9.x users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=www-servers/tomcat-9.0.40:9"

References

CVE-2020-17527

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202012-23.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.