Amazon Linux 2 : nghttp2 (ALAS-2024-2523)

medium Nessus Plugin ID 194856

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of nghttp2 installed on the remote host is prior to 1.41.0-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2024-2523 advisory.

- nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. The nghttp2 library prior to version 1.61.0 keeps reading the unbounded number of HTTP/2 CONTINUATION frames even after a stream is reset to keep HPACK context in sync. This causes excessive CPU usage to decode HPACK stream. nghttp2 v1.61.0 mitigates this vulnerability by limiting the number of CONTINUATION frames it accepts per stream.
There is no workaround for this vulnerability. (CVE-2024-28182)

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

Solution

Run 'yum update nghttp2' to update your system.

Plugin Details

Severity: Medium

ID: 194856

File Name: al2_ALAS-2024-2523.nasl

Version: 1.0

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 4/30/2024

Updated: 4/30/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2024-28182

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:nghttp2-debuginfo, p-cpe:/a:amazon:linux:libnghttp2, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:nghttp2, p-cpe:/a:amazon:linux:libnghttp2-devel

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/24/2024

Vulnerability Publication Date: 4/4/2024

Reference Information

CVE: CVE-2024-28182

Detections

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