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Amazon Linux AMI : golang (ALAS-2021-1527)

medium Nessus Plugin ID 153167

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Synopsis

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

Description

The version of golang installed on the remote host is prior to 1.15.14-1.69. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2021-1527 advisory.

 - In Go before 1.15.13 and 1.16.x before 1.16.5, some configurations of ReverseProxy (from net/http/httputil) result in a situation where an attacker is able to drop arbitrary headers.
 (CVE-2021-33197)

 - In Go before 1.15.13 and 1.16.x before 1.16.5, there can be a panic for a large exponent to the math/big.Rat SetString or UnmarshalText method. (CVE-2021-33198)

 - The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic. (CVE-2021-34558)

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 golang' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2021-1527.html

https://access.redhat.com/security/cve/CVE-2021-33197

https://access.redhat.com/security/cve/CVE-2021-33198

https://access.redhat.com/security/cve/CVE-2021-34558

Plugin Details

Severity: Medium

ID: 153167

File Name: ala_ALAS-2021-1527.nasl

Version: 1.4

Type: local

Agent: unix

Published: 9/9/2021

Updated: 12/1/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-33197

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

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

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: 9/2/2021

Vulnerability Publication Date: 7/15/2021

Reference Information

CVE: CVE-2021-33197, CVE-2021-33198, CVE-2021-34558

ALAS: 2021-1527

IAVB: 2021-B-0047-S