RHEL 8 : varnish:6 (RHSA-2023:6021)

critical Nessus Plugin ID 183971

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Synopsis

The remote Red Hat host is missing a security update for varnish:6.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:6021 advisory.

Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't have to create the same web page over and over again, giving the website a significant speed up.

Security Fix(es):

* HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Solution

Update the RHEL varnish:6 package based on the guidance in RHSA-2023:6021.

Plugin Details

Severity: Critical

ID: 183971

File Name: redhat-RHSA-2023-6021.nasl

Version: 1.4

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 10/27/2023

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.4

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

CVSS Score Source: CVE-2023-44487

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 9.3

Threat Vector: CVSS:4.0/E:A

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:varnish, cpe:/o:redhat:rhel_tus:8.4, cpe:/o:redhat:rhel_aus:8.4, p-cpe:/a:redhat:enterprise_linux:varnish-modules, p-cpe:/a:redhat:enterprise_linux:varnish-devel, p-cpe:/a:redhat:enterprise_linux:varnish-docs, cpe:/o:redhat:rhel_e4s:8.4

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: 10/27/2023

Vulnerability Publication Date: 10/10/2023

CISA Known Exploited Vulnerability Due Dates: 10/31/2023

Reference Information

CVE: CVE-2023-44487

CWE: 400

RHSA: 2023:6021

Detections

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