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Amazon Linux 2 : golang (ALAS-2020-1494)

high Nessus Plugin ID 141107

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Synopsis

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

Description

The version of golang installed on the remote host is prior to 1.13.15-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2020-1494 advisory.

 The x/text package before 0.3.3 for Go has a vulnerability in encoding/unicode that could lead to the UTF-16 decoder entering an infinite loop, causing the program to crash or run out of memory. An attacker could provide a single byte to a UTF16 decoder instantiated with UseBOM or ExpectBOM to trigger an infinite loop if the String function on the Decoder is called, or the Decoder is passed to golang.org/x/text/transform.String.A denial of service vulnerability was found in the golang.org/x/text library. A library or application must use one of the vulnerable functions, such as unicode.Transform, transform.String, or transform.Byte, to be susceptible to this vulnerability. If an attacker is able to supply specific characters or strings to the vulnerable application, there is the potential to cause an infinite loop to occur using more memory, resulting in a denial of service. (CVE-2020-14040)

 Go before 1.13.15 and 14.x before 1.14.7 can have an infinite read loop in ReadUvarint and ReadVarint in encoding/binary via invalid inputs. (CVE-2020-16845)



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 golang' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2020-1494.html

https://access.redhat.com/security/cve/CVE-2020-14040

https://access.redhat.com/security/cve/CVE-2020-16845

Plugin Details

Severity: High

ID: 141107

File Name: al2_ALAS-2020-1494.nasl

Version: 1.5

Type: local

Agent: unix

Published: 10/1/2020

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-16845

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:golang-bin, p-cpe:/a:amazon:linux:golang-src, p-cpe:/a:amazon:linux:golang-race, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:golang-tests, p-cpe:/a:amazon:linux:golang, p-cpe:/a:amazon:linux:golang-docs, p-cpe:/a:amazon:linux:golang-misc

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2020

Vulnerability Publication Date: 6/17/2020

Reference Information

CVE: CVE-2020-14040, CVE-2020-16845

ALAS: 2020-1494

IAVB: 2020-B-0060-S