CVE-2021-22870

Path traversal in GitHub Enterprise Server hosted Pages leads to unauthorized file read access

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A path traversal vulnerability was identified in GitHub Pages builds on GitHub Enterprise Server that could allow an attacker to read system files. 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 3.3 and was fixed in versions 3.0.19, 3.1.11, and 3.2.3. This vulnerability was reported via the GitHub Bug Bounty program.

Se ha identificado una vulnerabilidad de salto de ruta en las construcciones de GitHub Pages en GitHub Enterprise Server que podría permitir a un atacante leer archivos del sistema. Para explotar 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 3.3, y fue corregida en las versiones 3.0.19, 3.1.11 y 3.2.3. Esta vulnerabilidad fue reportada por medio del programa GitHub Bug Bounty

*Credits: yvvdwf

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-06 CVE Reserved
2021-11-10 CVE Published
2024-05-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-23: Relative Path Traversal

CAPEC

References (3)

URL	Tag	Source
https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.19	X_refsource_misc
https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.11	X_refsource_misc
https://docs.github.com/en/enterprise-server%403.2/admin/release-notes#3.2.3	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"		Enterprise Server Search vendor "Github" for product "Enterprise Server"				< 3.0.19 Search vendor "Github" for product "Enterprise Server" and version " < 3.0.19"		-		Affected
Github Search vendor "Github"		Enterprise Server Search vendor "Github" for product "Enterprise Server"				>= 3.1.0 < 3.1.11 Search vendor "Github" for product "Enterprise Server" and version " >= 3.1.0 < 3.1.11"		-		Affected
Github Search vendor "Github"		Enterprise Server Search vendor "Github" for product "Enterprise Server"				>= 3.2.0 < 3.2.3 Search vendor "Github" for product "Enterprise Server" and version " >= 3.2.0 < 3.2.3"		-		Affected