CVE-2020-10519

Unsafe configuration options in GitHub Pages leading to remote code execution on GitHub Enterprise Server

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration of the underlying parsers used by GitHub Pages were not sufficiently restricted and made it possible to execute commands on the GitHub Enterprise Server instance. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22.7 and was fixed in 2.22.7, 2.21.15, and 2.20.24. The underlying issues contributing to this vulnerability were identified through the GitHub Security Bug Bounty program.

Se identificó una vulnerabilidad de ejecución de código remota en GitHub Enterprise Server que podía ser explotada al construir un sitio de GitHub Pages. La configuración controlada por el usuario de los analizadores subyacentes utilizados por GitHub Pages no estaba suficientemente restringida y permitía ejecutar comandos en la instancia de GitHub Enterprise Server. Para aprovechar esta vulnerabilidad, un atacante necesitaría permiso para crear y construir un sitio de GitHub Pages en la instancia de GitHub Enterprise Server. Esta vulnerabilidad afectaba a todas las versiones de GitHub Enterprise Server anteriores a la 2.22.7 y fue corregida en las versiones 2.22.7, 2.21.15 y 2.20.24. Los problemas subyacentes que contribuyen a esta vulnerabilidad fueron identificados a través del programa GitHub Security Bug Bounty

*Credits: yvvdwf

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-03-12 CVE Reserved
2021-03-03 CVE Published
2023-11-16 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')

CAPEC

References (3)

URL	Tag	Source
https://docs.github.com/en/enterprise-server%402.20/admin/release-notes#2.20.24	X_refsource_misc
https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.15	X_refsource_misc
https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.7	X_refsource_misc

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

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"				< 2.20.24 Search vendor "Github" for product "Github" and version " < 2.20.24"		enterprise		Affected
Github Search vendor "Github"		Github Search vendor "Github" for product "Github"				>= 2.21.0 < 2.21.15 Search vendor "Github" for product "Github" and version " >= 2.21.0 < 2.21.15"		enterprise		Affected
Github Search vendor "Github"		Github Search vendor "Github" for product "Github"				>= 2.22.0 < 2.22.7 Search vendor "Github" for product "Github" and version " >= 2.22.0 < 2.22.7"		enterprise		Affected