RHEL 9 : haproxy (RHSA-2023:1696)

critical Nessus Plugin ID 174131

Synopsis

The remote Red Hat host is missing one or more security updates for haproxy.

Description

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2023:1696 advisory.

- An uncontrolled resource consumption vulnerability was discovered in HAProxy which could crash the service. This issue could allow an authenticated remote attacker to run a specially crafted malicious server in an OpenShift cluster. The biggest impact is to availability. (CVE-2023-0056)

- HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka request smuggling. The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31. (CVE-2023-25725)

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

Solution

Update the RHEL haproxy package based on the guidance in RHSA-2023:1696.

See Also

https://access.redhat.com/security/cve/CVE-2023-0056

https://access.redhat.com/security/cve/CVE-2023-25725

https://access.redhat.com/errata/RHSA-2023:1696

Plugin Details

Severity: Critical

ID: 174131

File Name: redhat-RHSA-2023-1696.nasl

Version: 1.4

Type: local

Agent: unix

Published: 4/11/2023

Updated: 1/26/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.4

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

CVSS Score Source: CVE-2023-25725

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

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

Vulnerability Information

CPE: cpe:/o:redhat:rhel_e4s:9.2, cpe:/o:redhat:rhel_aus:9.2, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:haproxy, cpe:/o:redhat:rhel_eus:9.2

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/11/2023

Vulnerability Publication Date: 2/14/2023

Reference Information

CVE: CVE-2023-0056, CVE-2023-25725

CWE: 400, 444

RHSA: 2023:1696