CVE-2018-1002105

high-risk
Published 2018-12-05

In all Kubernetes versions prior to v1.10.11, v1.11.5, and v1.12.3, incorrect handling of error responses to proxied upgrade requests in the kube-apiserver allowed specially crafted requests to establish a connection through the Kubernetes API server to backend servers, then send arbitrary requests over the same connection directly to the backend, authenticated with the Kubernetes API server's TLS credentials used to establish the backend connection.

Do I need to act?

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90.7% chance of exploitation in next 30 days
EPSS score — higher than 9% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
2 public exploits available
46053, 46052
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (11)

Trident

Affected Vendors

Redhat Netapp Kubernetes

References (40)

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00041.html
http://www.openwall.com/lists/oss-security/2019/06/28/2
http://www.openwall.com/lists/oss-security/2019/07/06/3
http://www.openwall.com/lists/oss-security/2019/07/06/4
Third Party Advisory http://www.securityfocus.com/bid/106068
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3537
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3549
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3551
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3598
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3624
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3742
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3752
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3754
Exploit https://github.com/evict/poc_CVE-2018-1002105
Issue Tracking https://github.com/kubernetes/kubernetes/issues/71411
https://groups.google.com/forum/#%21topic/kubernetes-announce/GVllWCg6L88
Third Party Advisory https://security.netapp.com/advisory/ntap-20190416-0001/
Mitigation https://www.coalfire.com/The-Coalfire-Blog/December-2018/Kubernetes-Vulnerabilit...
Exploit https://www.exploit-db.com/exploits/46052/
Exploit https://www.exploit-db.com/exploits/46053/
and 20 more references
68
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 20/34 · Moderate
Exposure 16/34 · Moderate