CVE-2017-18365

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Management Console in GitHub Enterprise 2.8.x before 2.8.7 has a deserialization issue that allows unauthenticated remote attackers to execute arbitrary code. This occurs because the enterprise session secret is always the same, and can be found in the product's source code. By sending a crafted cookie signed with this secret, one can call Marshal.load with arbitrary data, which is a problem because the Marshal data format allows Ruby objects.

La consola de gestión en GitHub Enterprise, en las versiones 2.8.x anteriores a la 2.8.7, tiene un fallo de deserialización que permite a los atacantes remotos sin autenticar ejecutar código arbitrario. Esto ocurre debido a que el secreto de sesión "enterprise" es siempre el mismo y puede encontrarse en el código fuente del producto. Al enviar una cookie manipulada firmada con este secreto, se puede llamar a Marshal.load con datos arbitrarios. Esto es problemático, ya que el formato de los datos Marshal permite los objetos Ruby.

*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

2019-03-28 CVE Reserved
2019-03-28 CVE Published
2023-03-07 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-502: Deserialization of Untrusted Data

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://www.exablue.de/blog/2017-03-15-github-enterprise-remote-code-execution.html	2024-08-05

URL	Date	SRC

URL	Date	SRC
https://enterprise.github.com/releases/2.8.7/notes	2019-03-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Github Search vendor "Github"		Github Search vendor "Github" for product "Github"				>= 2.8.0 < 2.8.7 Search vendor "Github" for product "Github" and version " >= 2.8.0 < 2.8.7"		enterprise		Affected
Github Search vendor "Github"		Github Search vendor "Github" for product "Github"				2.8.7 Search vendor "Github" for product "Github" and version "2.8.7"		-		Affected