- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 202012-23
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Low
Title: Apache Tomcat: Information disclosure
Date: December 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
-------------------------------------------------------------------
1 www-servers/tomcat < 8.5.60:8.5 >= 8.5.60:8.5
< 9.0.40:9 >= 9.0.40:9
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
==========
[ 1 ] CVE-2020-17527
https://nvd.nist.gov/vuln/detail/CVE-2020-17527
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202012-23
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.
License
=======
Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5