CVE-2018-20321

An issue was discovered in Rancher 2 through 2.1.5. Any project member with access to the default namespace can mount the netes-default service account in a pod, and then use that pod to execute administrative privileged commands against the k8s cluster. This could be mitigated by isolating the default namespace in a separate project, where only cluster admins can be given permissions to access. As of 2018-12-20, this bug affected ALL clusters created or imported by Rancher.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

Vector : AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://forums.rancher.com/c/announcements	Vendor Advisory
https://rancher.com/blog/2019/2019-01-29-explaining-security-vulnerabilities-addressed-in-rancher-v2-1-6-and-v2-0-11/	Mitigation Vendor Advisory
https://forums.rancher.com/c/announcements	Vendor Advisory
https://rancher.com/blog/2019/2019-01-29-explaining-security-vulnerabilities-addressed-in-rancher-v2-1-6-and-v2-0-11/	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*

History

21 Nov 2024, 04:01

Type	Values Removed	Values Added
References	~~() https://forums.rancher.com/c/announcements - Vendor Advisory~~	() https://forums.rancher.com/c/announcements - Vendor Advisory
References	~~() https://rancher.com/blog/2019/2019-01-29-explaining-security-vulnerabilities-addressed-in-rancher-v2-1-6-and-v2-0-11/ - Mitigation, Vendor Advisory~~	() https://rancher.com/blog/2019/2019-01-29-explaining-security-vulnerabilities-addressed-in-rancher-v2-1-6-and-v2-0-11/ - Mitigation, Vendor Advisory

Information

Published : 2019-04-10 14:29

Updated : 2024-11-21 04:01

NVD link : CVE-2018-20321

Mitre link : CVE-2018-20321

CVE.ORG link : CVE-2018-20321

JSON object : View

Products Affected

suse

rancher

CWE

CWE-668

Exposure of Resource to Wrong Sphere

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