CVE-2018-1002105
CWE-388Published: December 5, 2018· Updated: Jun 17, 2026
Official Description
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.
Technical Analysis
CVE-2018-1002105 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
A proof-of-concept (PoC) exploit exists for CVE-2018-1002105. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (40)
Quick Facts
Related CVEs (CWE-388)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-1002105 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts