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Amazon Linux AMI : python27, python36, python38 (ALAS-2021-1484)

critical Nessus Plugin ID 146819

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Synopsis

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

Description

The version of python27 installed on the remote host is prior to 2.7.18-2.141. The version of python36 installed on the remote host is prior to 3.6.12-1.20. The version of python38 installed on the remote host is prior to 3.8.5-1.5. It is, therefore, affected by a vulnerability as referenced in the ALAS-2021-1484 advisory.

 - Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to remote code execution in certain Python applications that accept floating-point numbers as untrusted input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used unsafely. (CVE-2021-3177)

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 python27' to update your system.
 Run 'yum update python36' to update your system.
 Run 'yum update python38' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2021-1484.html

https://access.redhat.com/security/cve/CVE-2021-3177

Plugin Details

Severity: Critical

ID: 146819

File Name: ala_ALAS-2021-1484.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2/24/2021

Updated: 1/19/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2021-3177

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:python27, p-cpe:/a:amazon:linux:python27-debuginfo, p-cpe:/a:amazon:linux:python27-devel, p-cpe:/a:amazon:linux:python27-libs, p-cpe:/a:amazon:linux:python27-test, p-cpe:/a:amazon:linux:python27-tools, p-cpe:/a:amazon:linux:python36, p-cpe:/a:amazon:linux:python36-debug, p-cpe:/a:amazon:linux:python36-debuginfo, p-cpe:/a:amazon:linux:python36-devel, p-cpe:/a:amazon:linux:python36-libs, p-cpe:/a:amazon:linux:python36-test, p-cpe:/a:amazon:linux:python36-tools, p-cpe:/a:amazon:linux:python38, p-cpe:/a:amazon:linux:python38-debug, p-cpe:/a:amazon:linux:python38-debuginfo, p-cpe:/a:amazon:linux:python38-devel, p-cpe:/a:amazon:linux:python38-libs, p-cpe:/a:amazon:linux:python38-test, p-cpe:/a:amazon:linux:python38-tools, 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: 2/23/2021

Vulnerability Publication Date: 1/19/2021

Reference Information

CVE: CVE-2021-3177

ALAS: 2021-1484