CVE-2017-18342

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In PyYAML before 5.1, the yaml.load() API could execute arbitrary code if used with untrusted data. The load() function has been deprecated in version 5.1 and the 'UnsafeLoader' has been introduced for backward compatibility with the function.

En PyYAML en versiones anteriores a 5.1, la API yaml.load () podría ejecutar código arbitrario si se usara con datos no confiables. La función load () ha quedado en desuso en la versión 5.1 y se ha introducido el "UnsafeLoader" para una compatibilidad hacia atrás con la función.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-06-27 CVE Reserved
2018-06-27 CVE Published
2024-06-06 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-502: Deserialization of Untrusted Data

CAPEC

References (9)

URL	Tag	Source
https://github.com/marshmallow-code/apispec/issues/278	Third Party Advisory
https://github.com/yaml/pyyaml/blob/master/CHANGES	Release Notes
https://github.com/yaml/pyyaml/issues/193	Third Party Advisory
https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load%28input%29-Deprecation	X_refsource_misc

URL	Date	SRC

URL	Date	SRC
https://github.com/yaml/pyyaml/pull/74	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JEX7IPV5P2QJITAMA5Z63GQCZA5I6NVZ	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSQQMRUQSXBSUXLCRD3TSZYQ7SEZRKCE	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M6JCFGEIEOFMWWIXGHSELMKQDD4CV2BA	2023-11-07
https://security.gentoo.org/glsa/202003-45	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Pyyaml Search vendor "Pyyaml"		Pyyaml Search vendor "Pyyaml" for product "Pyyaml"				< 5.1 Search vendor "Pyyaml" for product "Pyyaml" and version " < 5.1"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				28 Search vendor "Fedoraproject" for product "Fedora" and version "28"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				29 Search vendor "Fedoraproject" for product "Fedora" and version "29"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				30 Search vendor "Fedoraproject" for product "Fedora" and version "30"		-		Affected