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Gentoo Linux Security Advisory                           GLSA 202006-21
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Apache Tomcat: Remote code execution
     Date: June 15, 2020
     Bugs: #724344
       ID: 202006-21

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Synopsis
=======
A vulnerability has been discovered in Apache Tomcat which could result
in the arbitrary execution of code.

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

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  www-servers/tomcat         < 7.0.104:7              >= 7.0.104:7 
                                < 8.5.55:8.5            >= 8.5.55:8.5 

Description
==========
Apache Tomcat improperly handles deserialization of files under
specific circumstances.

Impact
=====
A remote attacker could possibly execute arbitrary code with the
privileges of the process, or cause a Denial of Service condition.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Apache Tomcat 7.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=www-servers/tomcat-7.0.104"

All Apache Tomcat 8.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=www-servers/tomcat-8.5.55"

References
=========
[ 1 ] CVE-2020-9484
      https://nvd.nist.gov/vuln/detail/CVE-2020-9484
[ 2 ] Upstream advisory (7)
      https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.104
[ 3 ] Upstream advisory (8.5)
      https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.55

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202006-21

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/