GLSA-202012-22 : HAProxy: Arbitrary code execution

high Nessus Plugin ID 144610
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The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-202012-22 (HAProxy: Arbitrary code execution)

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.


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'

See Also

Plugin Details

Severity: High

ID: 144610

File Name: gentoo_GLSA-202012-22.nasl

Version: 1.2

Type: local

Published: 12/28/2020

Updated: 12/30/2020

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.1

Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P

Temporal Vector: E:POC/RL:OF/RC:C


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:haproxy, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/24/2020

Vulnerability Publication Date: 4/2/2020

Reference Information

CVE: CVE-2020-11100

GLSA: 202012-22