CVE-2020-8555 : The Kubernetes kube-controller-manager in versions v1.0-1.14, versions prior to

The Kubernetes kube-controller-manager in versions v1.0-1.14, versions prior to v1.15.12, v1.16.9, v1.17.5, and version v1.18.0 are vulnerable to a Server Side Request Forgery (SSRF) that allows certain authorized users to leak up to 500 bytes of arbitrary information from unprotected endpoints within the master's host network (such as link-local or loopback services).

Published 2020-06-05 17:15:12

Updated 2022-11-16 03:39:12

Source Kubernetes

View at NVD, CVE.org

Vulnerability category: Server-side request forgery (SSRF)

Products affected by CVE-2020-8555

Fedoraproject » Fedora » Version: 32
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Matching versions
Kubernetes » Kubernetes
Versions from including (>=) 1.16.0 and before (<) 1.16.9
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
Matching versions
Kubernetes » Kubernetes
Versions before (<) 1.15.11
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
Matching versions
Kubernetes » Kubernetes
Versions from including (>=) 1.17.0 and before (<) 1.17.5
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
Matching versions
Kubernetes » Kubernetes » Version: 1.18.0
cpe:2.3:a:kubernetes:kubernetes:1.18.0:-:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2020-8555

EPSS FAQ

0.10%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 42 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-8555

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
3.5	LOW	AV:N/AC:M/Au:S/C:P/I:N/A:N	6.8	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: Single Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
6.3	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N	1.8	4.0	Kubernetes
Attack Vector: Network Attack Complexity: High Privileges Required: Low User Interaction: None Scope: Changed Confidentiality: High Integrity: None Availability: None
6.3	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N	1.8	4.0	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: Low User Interaction: None Scope: Changed Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2020-8555

CWE-918 Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
Assigned by:
- jordan@liggitt.net (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2020-8555

https://security.netapp.com/advisory/ntap-20200724-0005/

CVE-2020-8555 Kubernetes Vulnerability in NetApp Products | NetApp Product Security
Third Party Advisory
https://github.com/kubernetes/kubernetes/issues/91542

CVE-2020-8555: Half-Blind SSRF in kube-controller-manager · Issue #91542 · kubernetes/kubernetes · GitHub
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3SOCLOPTSYABTE4CLTSPDIFE6ZZZR4LX/

Mailing List;Third Party Advisory

CVEs referencing this url
http://www.openwall.com/lists/oss-security/2021/05/04/8

oss-security - [kubernetes] CVE-2020-8562: Bypass of Kubernetes API Server proxy TOCTOU
Mailing List;Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/06/01/4

oss-security - CVE-2020-8555: Kubernetes: Half-Blind SSRF in kube-controller-manager
Mailing List;Third Party Advisory
https://groups.google.com/d/topic/kubernetes-security-announce/kEK27tqqs30/discussion

[Security Advisory] CVE-2020-8555: Half-Blind SSRF in kube-controller-manager - Google Groepen
Mailing List;Third Party Advisory

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Vulnerability Details : CVE-2020-8555

Products affected by CVE-2020-8555

Exploit prediction scoring system (EPSS) score for CVE-2020-8555

CVSS scores for CVE-2020-8555

CWE ids for CVE-2020-8555

References for CVE-2020-8555