CentOS 8 : python-cryptography (CESA-2021:1608)

critical Nessus Plugin ID 149778

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Synopsis

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

Description

The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2021:1608 advisory.

 - python-cryptography: bleichenbacher timing oracle attack against RSA decryption (CVE-2020-25659)

 - python-cryptography: certain sequences of update() calls when symmetrically encrypting very large payloads could result in an integer overflow and lead to buffer overflows (CVE-2020-36242)

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 python3-cryptography package.

See Also

https://access.redhat.com/errata/RHSA-2021:1608

Plugin Details

Severity: Critical

ID: 149778

File Name: centos8_RHSA-2021-1608.nasl

Version: 1.3

Type: local

Agent: unix

Published: 5/19/2021

Updated: 6/2/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-36242

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:centos:centos:8-stream, p-cpe:/a:centos:centos:python3-cryptography

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/18/2021

Vulnerability Publication Date: 1/11/2021

Reference Information

CVE: CVE-2020-25659, CVE-2020-36242

RHSA: 2021:1608