GLSA 202012-22: HAProxy: Arbitrary code execution

http://security.gentoo.org/

Severity:	normal
Title:	HAProxy: Arbitrary code execution
Date:	12/24/2020
Bugs:	#715944
ID:	202012-22

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	Architecture(s)
net-proxy/haproxy	< 2.1.4	>= 2.0.13	All supported architectures

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

CVE-2020-11100

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202012-22.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.