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Amazon Linux 2 : python, python3 (ALAS-2021-1611)

critical Nessus Plugin ID 146622

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Synopsis

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

Description

The version of python installed on the remote host is prior to 2.7.18-1. The version of python3 installed on the remote host is prior to 3.7.9-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2021-1611 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 python' to update your system.
 Run 'yum update python3' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2021-1611.html

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

Plugin Details

Severity: Critical

ID: 146622

File Name: al2_ALAS-2021-1611.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2/19/2021

Updated: 1/22/2024

Supported Sensors: Agentless Assessment, Continuous 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:python3, p-cpe:/a:amazon:linux:python-tools, p-cpe:/a:amazon:linux:python3-test, p-cpe:/a:amazon:linux:python-test, p-cpe:/a:amazon:linux:python-debuginfo, p-cpe:/a:amazon:linux:python-devel, p-cpe:/a:amazon:linux:python3-devel, p-cpe:/a:amazon:linux:python-debug, p-cpe:/a:amazon:linux:python-libs, p-cpe:/a:amazon:linux:python, p-cpe:/a:amazon:linux:python3-debug, p-cpe:/a:amazon:linux:python3-debuginfo, p-cpe:/a:amazon:linux:python3-tools, p-cpe:/a:amazon:linux:tkinter, p-cpe:/a:amazon:linux:python3-libs, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:python3-tkinter

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: 2/19/2021

Vulnerability Publication Date: 1/19/2021

Reference Information

CVE: CVE-2021-3177

ALAS: 2021-1611