CVE-2017-2295

puppet: Unsafe YAML deserialization

Severity Score

8.2

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Versions of Puppet prior to 4.10.1 will deserialize data off the wire (from the agent to the server, in this case) with a attacker-specified format. This could be used to force YAML deserialization in an unsafe manner, which would lead to remote code execution. This change constrains the format of data on the wire to PSON or safely decoded YAML.

Las versiones de Puppet anteriores a la 4.10.1 deserializarán datos "off the wire" (del agente al servidor, en este caso) con un formato especificado por el atacante. Esto podría emplearse para forzar la deserialización YAML de forma no segura, lo que conduciría a la ejecución remota de código. Este cambio limita el formato de los datos on the wire a PSON o a YAML descodificado de forma segura.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-12-01 CVE Reserved
2017-06-05 CVE Published
2023-08-31 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-502: Deserialization of Untrusted Data

CAPEC

References (5)

URL	Tag	Source
http://www.securityfocus.com/bid/98582	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3862	2018-05-24
https://puppet.com/security/cve/cve-2017-2295	2018-05-24
https://access.redhat.com/security/cve/CVE-2017-2295	2018-02-21
https://bugzilla.redhat.com/show_bug.cgi?id=1452651	2018-02-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Puppet Search vendor "Puppet"		Puppet Search vendor "Puppet" for product "Puppet"				<= 4.10.0 Search vendor "Puppet" for product "Puppet" and version " <= 4.10.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected