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Linux Distros Unpatched Vulnerability : CVE-2023-44487

high Nessus Plugin ID 226986

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. (CVE-2023-44487)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2023-44487

https://security-tracker.debian.org/tracker/CVE-2023-44487

Plugin Details

Severity: High

ID: 226986

File Name: unpatched_CVE_2023_44487.nasl

Version: 1.10

Type: local

Agent: unix

Family: Misc.

Published: 3/5/2025

Updated: 3/13/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2023-44487

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7.3

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:U/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:varnish, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:redhat:enterprise_linux:toolbox, p-cpe:/a:centos:centos:toolbox-tests, p-cpe:/a:debian:debian_linux:h2o, cpe:/o:centos:centos:8, p-cpe:/a:debian:debian_linux:nginx, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:debian:debian_linux:dnsdist, p-cpe:/a:redhat:enterprise_linux:toolbox-tests, p-cpe:/a:debian:debian_linux:grpc, cpe:/o:debian:debian_linux:12.0, cpe:/o:redhat:enterprise_linux:8, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:centos:centos:toolbox

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 10/10/2023

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

Reference Information

CVE: CVE-2023-44487