CVE-2017-1002101

kubernetes: Volume security can be sidestepped with innocent emptyDir and subpath

Severity Score

9.6

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In Kubernetes versions 1.3.x, 1.4.x, 1.5.x, 1.6.x and prior to versions 1.7.14, 1.8.9 and 1.9.4 containers using subpath volume mounts with any volume type (including non-privileged pods, subject to file permissions) can access files/directories outside of the volume, including the host's filesystem.

En Kubernetes, en versiones 1.3.x, 1.4.x, 1.5.x, 1.6.x y en versiones anteriores a la 1.7.14, 1.8.9 y 1.9.4, los contenedores que emplean montajes de volumen subpath con cualquier tipo de volumen (incluyendo pods no privilegiados, dependientes de los permisos de archivo) pueden acceder a archivos/directorios fuera del volumen, incluyendo el sistema de archivos del host.

It was found that volume security can be sidestepped with innocent emptyDir and subpath. This could give an attacker with access to a pod full control over the node host by gaining access to docker socket.

*Credits: Reported by Maxim Ivanov

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

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

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-12-07 CVE Reserved
2018-03-12 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2024-08-13 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-59: Improper Link Resolution Before File Access ('Link Following')

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC
https://github.com/bgeesaman/subpath-exploit	2024-08-05

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00041.html	2019-10-09
https://access.redhat.com/errata/RHSA-2018:0475	2019-10-09
https://github.com/kubernetes/kubernetes/issues/60813	2019-10-09
https://access.redhat.com/security/cve/CVE-2017-1002101	2018-03-12
https://bugzilla.redhat.com/show_bug.cgi?id=1525130	2018-03-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.3.0 <= 1.3.10 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.3.0 <= 1.3.10"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.4.0 <= 1.4.12 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.4.0 <= 1.4.12"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.5.0 <= 1.5.8 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.5.0 <= 1.5.8"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.6.0 <= 1.6.13 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.6.0 <= 1.6.13"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.7.0 < 1.7.14 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.7.0 < 1.7.14"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.8.0 < 1.8.9 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.8.0 < 1.8.9"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.9.0 < 1.9.4 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.9.0 < 1.9.4"		-		Affected