Amazon Linux 2 : haproxy2 (ALASHAPROXY2-2023-006)

high Nessus Plugin ID 181985

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of haproxy2 installed on the remote host is prior to 2.1.4-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2HAPROXY2-2023-006 advisory.

- In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can write arbitrary bytes around a certain location on the heap via a crafted HTTP/2 request, possibly causing remote code execution. (CVE-2020-11100)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update haproxy2' to update your system.

Plugin Details

Severity: High

ID: 181985

File Name: al2_ALASHAPROXY2-2023-006.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 9/27/2023

Updated: 9/28/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.1

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2020-11100

CVSS v3

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: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:haproxy2, p-cpe:/a:amazon:linux:haproxy2-debuginfo, cpe:/o:amazon:linux:2

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/21/2023

Vulnerability Publication Date: 4/2/2020

Reference Information

CVE: CVE-2020-11100

Detections

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