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EulerOS 2.0 SP8 : PyYAML (EulerOS-SA-2020-1297)

critical Nessus Plugin ID 134789

Synopsis

The remote EulerOS host is missing a security update.

Description

According to the version of the PyYAML packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

 - PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.(CVE-2019-20477)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected PyYAML package.

See Also

http://www.nessus.org/u?a0d8c266

Plugin Details

Severity: Critical

ID: 134789

File Name: EulerOS_SA-2020-1297.nasl

Version: 1.6

Type: local

Published: 3/23/2020

Updated: 3/21/2024

Supported Sensors: 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-2019-20477

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:huawei:euleros:python2-pyyaml, p-cpe:/a:huawei:euleros:python3-pyyaml, cpe:/o:huawei:euleros:2.0

Required KB Items: Host/local_checks_enabled, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/23/2020

Reference Information

CVE: CVE-2019-20477