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Gentoo Linux Security Advisory                           GLSA 202004-01
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                                           https://security.gentoo.org/
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 Severity: High
    Title: HAProxy: Remote execution of arbitrary code
     Date: April 01, 2020
     Bugs: #701842
       ID: 202004-01

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Synopsis
=======
A vulnerability in HAProxy might lead to remote execution of arbitrary
code.

Background
=========
HAProxy is a TCP/HTTP reverse proxy for high availability environments.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-proxy/haproxy            < 2.0.10                 *>= 1.8.23
                                                           *>= 1.9.13
                                                           *>= 2.0.10

Description
==========
It was discovered that HAProxy incorrectly handled certain HTTP/2
headers.

Impact
=====
A remote attacker could send a specially crafted HTTP/2 header,
possibly resulting in execution of arbitrary code with the privileges
of the process or a Denial of Service condition.

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

Resolution
=========
All HAProxy 1.8.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-proxy/haproxy-1.8.23"

All HAProxy 1.9.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-proxy/haproxy-1.9.13"

All HAProxy 2.0.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-proxy/haproxy-2.0.10"

References
=========
[ 1 ] CVE-2019-19330
      https://nvd.nist.gov/vuln/detail/CVE-2019-19330

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

 https://security.gentoo.org/glsa/202004-01

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/