Gentoo: GLSA-202012-22 Normal: HAProxy Arbitrary Code Execution Risk
gentoo
December 24, 2020
A buffer overflow in HAProxy might allow an attacker to execute arbitrary code.
Summary
It was discovered that HAProxy incorrectly handled certain HTTP/2 headers.
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"
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
style>.gentoo_availability{display:block;}
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.
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Severity: Normal
Title: HAProxy: Arbitrary code execution
Date: December 24, 2020
Bugs: #715944
ID: 202012-22
Background
HAProxy is a TCP/HTTP reverse proxy for high availability environments.
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Affected Packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-proxy/haproxy < 2.1.4 >= 2.0.13:0/2.0
>= 2.1.4
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.
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