CVE-2020-1747

 

Published at: - 24-03-2020 04:15

Last modified: - 25-07-2022 08:15

Total changes: - 6

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1747
• https://github.com/yaml/pyyaml/pull/386
• FEDORA-2020-40c35d7b37-Mailing List, Third Party Advisory
• FEDORA-2020-bdb0bfa928-Mailing List, Third Party Advisory
• FEDORA-2020-e9741a6a15-Mailing List, Third Party Advisory
• openSUSE-SU-2020:0507-Mailing List, Third Party Advisory
• openSUSE-SU-2020:0630-Mailing List, Third Party Advisory
• FEDORA-2021-3342569a0f-Mailing List, Third Party Advisory
• FEDORA-2021-eed7193502-Mailing List, Third Party Advisory
• N/A-

 

Keywords

NVD

 

CVE-2020-1747

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures