EulerOS 2.0 SP8 : PyYaml (EulerOS-SA-2020-1825)

Critical Nessus Plugin ID 139155

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 :

- A vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw.
An attacker could use this flaw to execute arbitrary code on the system by abusing the python/object/new constructor.(CVE-2020-1747)

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?602e3a10

Plugin Details

Severity: Critical

ID: 139155

File Name: EulerOS_SA-2020-1825.nasl

Version: 1.2

Type: local

Published: 2020/07/30

Updated: 2020/08/03

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 7.4

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

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:U/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 Ease: No known exploits are available

Patch Publication Date: 2020/07/30

Reference Information

CVE: CVE-2020-1747