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SUSE SLES12 Security Update : python-PyYAML (SUSE-SU-2022:3231-1)

critical Nessus Plugin ID 164936

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Synopsis

The remote SUSE host is missing a security update.

Description

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2022:3231-1 advisory.

 - CVE-2020-14343: Fixed a arbitrary code execution when processing untrusted YAML files through the full_load method or with the FullLoader loader. This Fixes an incomplete solution for CVE-2020-1747 (bnc#1174514).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

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 python-PyYAML and / or python3-PyYAML packages.

See Also

https://bugzilla.suse.com/1174514

https://www.suse.com/security/cve/CVE-2020-14343

http://www.nessus.org/u?9a1f1f79

Plugin Details

Severity: Critical

ID: 164936

File Name: suse_SU-2022-3231-1.nasl

Version: 1.7

Type: Local

Agent: unix

Published: 9/10/2022

Updated: 6/25/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.95

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2020-14343

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:python-pyyaml, cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:python3-pyyaml

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/9/2022

Vulnerability Publication Date: 1/21/2021

Reference Information

CVE: CVE-2020-14343

SuSE: SUSE-SU-2022:3231-1