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Gentoo Linux Security Advisory GLSA 202012-22
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https://security.gentoo.org/
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Severity: Normal
Title: HAProxy: Arbitrary code execution
Date: December 24, 2020
Bugs: #715944
ID: 202012-22
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Synopsis
========
A buffer overflow in HAProxy might allow an attacker to execute
arbitrary code.
Background
==========
HAProxy is a TCP/HTTP reverse proxy for high availability environments.
Affected packages
=================
——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 net-proxy/haproxy < 2.1.4 >= 2.0.13:0/2.0
>= 2.1.4
Description
===========
It was discovered that HAProxy incorrectly handled certain HTTP/2
headers.
Impact
======
A remote attacker, by sending a specially crafted HTTP/2 request, could
possibly execute arbitrary code with the privileges of the process, or
cause a Denial of Service condition.
Workaround
==========
Disable HTTP/2 support.
Resolution
==========
All HAProxy 2.0.x users should upgrade to the latest version:
# emerge –sync
# emerge –ask –oneshot –verbose “>=net-proxy/haproxy-2.0.13:0/2.0”
All other HAProxy users should upgrade to the latest version:
# emerge –sync
# emerge –ask –oneshot –verbose “>=net-proxy/haproxy-2.1.4”
References
==========
[ 1 ] CVE-2020-11100
https://nvd.nist.gov/vuln/detail/CVE-2020-11100
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202012-22
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
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