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Amazon Linux 2023 : libnghttp2, libnghttp2-devel, nghttp2 (ALAS2023-2023-392)

high Nessus Plugin ID 183350

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Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2023-392 advisory.

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

Solution

Run 'dnf update nghttp2 --releasever 2023.2.20231016' to update your system.

See Also

https://alas.aws.amazon.com/AL2023/ALAS-2023-392.html

https://alas.aws.amazon.com/cve/html/CVE-2023-44487.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: High

ID: 183350

File Name: al2023_ALAS2023-2023-392.nasl

Version: 1.4

Type: local

Agent: unix

Published: 10/19/2023

Updated: 2/23/2024

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: 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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:nghttp2-debugsource, p-cpe:/a:amazon:linux:nghttp2-debuginfo, p-cpe:/a:amazon:linux:libnghttp2-debuginfo, p-cpe:/a:amazon:linux:libnghttp2, p-cpe:/a:amazon:linux:nghttp2, p-cpe:/a:amazon:linux:libnghttp2-devel, cpe:/o:amazon:linux:2023

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: 10/16/2023

Vulnerability Publication Date: 10/10/2023

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

Reference Information

CVE: CVE-2023-44487

IAVB: 2023-B-0083-S