Debian DSA-4968-1 : haproxy - security update

high Nessus Plugin ID 153123

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dsa-4968 advisory.

- An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack, allowing an attacker to bypass all configured http-request HAProxy ACLs and possibly other ACLs. (CVE-2021-40346)

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

Solution

Upgrade the haproxy packages.

For the stable distribution (bullseye), this problem has been fixed in version 2.2.9-2+deb11u2.

Plugin Details

Severity: High

ID: 153123

File Name: debian_DSA-4968.nasl

Version: 1.6

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/8/2021

Updated: 12/1/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2021-40346

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:haproxy-doc, p-cpe:/a:debian:debian_linux:vim-haproxy, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:haproxy

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/7/2021

Vulnerability Publication Date: 9/7/2021

Reference Information

CVE: CVE-2021-40346

IAVB: 2021-B-0056

Detections

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