Amazon Linux 2 : libuv (ALAS-2021-1581)

high Nessus Plugin ID 144797

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Synopsis

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

Description

The version of libuv installed on the remote host is prior to 1.39.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1581 advisory.

Node.js < 12.18.4 and < 14.11 can be exploited to perform HTTP desync attacks and deliver malicious payloads to unsuspecting users. The payloads can be crafted by an attacker to hijack user sessions, poison cookies, perform clickjacking, and a multitude of other attacks depending on the architecture of the underlying system. The attack was possible due to a bug in processing of carrier-return symbols in the HTTP header names. (CVE-2020-8201)

A flaw was found in Node.js 14.x, in versions before 14.11, where it is vulnerable to a denial of service caused by delayed requests. When used as an edge server, this flaw allows an attacker to initiate a large number of HTTP requests, causing resource exhaustion and leaving the service unable to accept new connections. The highest threat from this vulnerability is to system availability. (CVE-2020-8251)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

Solution

Run 'yum update libuv' to update your system.

Plugin Details

Severity: High

ID: 144797

File Name: al2_ALAS-2021-1581.nasl

Version: 1.3

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 1/7/2021

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2020-8201

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libuv-debuginfo, p-cpe:/a:amazon:linux:libuv-static, p-cpe:/a:amazon:linux:libuv, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:libuv-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: 1/5/2021

Vulnerability Publication Date: 9/15/2020

Reference Information

CVE: CVE-2020-8201, CVE-2020-8251

ALAS: 2021-1581

Detections

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