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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Python vulnerabilities (USN-4754-1)

critical Nessus Plugin ID 147997

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4754-1 advisory.

 - In Python 3 through 3.9.0, the Lib/test/multibytecodec_support.py CJK codec tests call eval() on content retrieved via HTTP. (CVE-2020-27619)

 - 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

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-4754-1

Plugin Details

Severity: Critical

ID: 147997

File Name: ubuntu_USN-4754-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 3/23/2021

Updated: 10/21/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

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: 9.1

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:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:idle-python2.7, p-cpe:/a:canonical:ubuntu_linux:idle-python3.4, p-cpe:/a:canonical:ubuntu_linux:idle-python3.5, p-cpe:/a:canonical:ubuntu_linux:idle-python3.6, p-cpe:/a:canonical:ubuntu_linux:idle-python3.8, p-cpe:/a:canonical:ubuntu_linux:libpython2.7, p-cpe:/a:canonical:ubuntu_linux:libpython2.7-dev, p-cpe:/a:canonical:ubuntu_linux:libpython2.7-minimal, p-cpe:/a:canonical:ubuntu_linux:libpython2.7-stdlib, p-cpe:/a:canonical:ubuntu_linux:libpython2.7-testsuite, p-cpe:/a:canonical:ubuntu_linux:libpython3.4, p-cpe:/a:canonical:ubuntu_linux:libpython3.4-dev, p-cpe:/a:canonical:ubuntu_linux:libpython3.4-minimal, p-cpe:/a:canonical:ubuntu_linux:libpython3.4-stdlib, p-cpe:/a:canonical:ubuntu_linux:libpython3.4-testsuite, p-cpe:/a:canonical:ubuntu_linux:libpython3.5, p-cpe:/a:canonical:ubuntu_linux:libpython3.5-dev, p-cpe:/a:canonical:ubuntu_linux:libpython3.5-minimal, p-cpe:/a:canonical:ubuntu_linux:libpython3.5-stdlib, p-cpe:/a:canonical:ubuntu_linux:libpython3.5-testsuite, p-cpe:/a:canonical:ubuntu_linux:libpython3.6, p-cpe:/a:canonical:ubuntu_linux:libpython3.6-dev, p-cpe:/a:canonical:ubuntu_linux:libpython3.6-minimal, p-cpe:/a:canonical:ubuntu_linux:libpython3.6-stdlib, p-cpe:/a:canonical:ubuntu_linux:libpython3.6-testsuite, p-cpe:/a:canonical:ubuntu_linux:libpython3.8, p-cpe:/a:canonical:ubuntu_linux:libpython3.8-dev, p-cpe:/a:canonical:ubuntu_linux:libpython3.8-minimal, p-cpe:/a:canonical:ubuntu_linux:libpython3.8-stdlib, p-cpe:/a:canonical:ubuntu_linux:libpython3.8-testsuite, p-cpe:/a:canonical:ubuntu_linux:python2.7, p-cpe:/a:canonical:ubuntu_linux:python2.7-dev, p-cpe:/a:canonical:ubuntu_linux:python2.7-examples, p-cpe:/a:canonical:ubuntu_linux:python2.7-minimal, p-cpe:/a:canonical:ubuntu_linux:python3.4, p-cpe:/a:canonical:ubuntu_linux:python3.4-dev, p-cpe:/a:canonical:ubuntu_linux:python3.4-examples, p-cpe:/a:canonical:ubuntu_linux:python3.4-minimal, p-cpe:/a:canonical:ubuntu_linux:python3.4-venv, p-cpe:/a:canonical:ubuntu_linux:python3.5, p-cpe:/a:canonical:ubuntu_linux:python3.5-dev, p-cpe:/a:canonical:ubuntu_linux:python3.5-examples, p-cpe:/a:canonical:ubuntu_linux:python3.5-minimal, p-cpe:/a:canonical:ubuntu_linux:python3.5-venv, p-cpe:/a:canonical:ubuntu_linux:python3.6, p-cpe:/a:canonical:ubuntu_linux:python3.6-dev, p-cpe:/a:canonical:ubuntu_linux:python3.6-examples, p-cpe:/a:canonical:ubuntu_linux:python3.6-minimal, p-cpe:/a:canonical:ubuntu_linux:python3.6-venv, p-cpe:/a:canonical:ubuntu_linux:python3.8, p-cpe:/a:canonical:ubuntu_linux:python3.8-dev, p-cpe:/a:canonical:ubuntu_linux:python3.8-examples, p-cpe:/a:canonical:ubuntu_linux:python3.8-minimal, p-cpe:/a:canonical:ubuntu_linux:python3.8-venv

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/25/2021

Vulnerability Publication Date: 10/22/2020

Reference Information

CVE: CVE-2020-27619, CVE-2021-3177

USN: 4754-1