THREATPORT/VULNERABILITY/CVE-2020-8555
MEDIUM SEVERITY

CVE-2020-8555

Kubernetes vulnerability

CVSS
6.3
EPSS
3.7%
EPSS pct
89th
Exploited
No known
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).
Affected vendor
Kubernetes
Affected product
Kubernetes
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness type (CWE)
  • CWE-918 — Server-Side Request Forgery (SSRF)
Published
2020-06-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 3.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2020-8555

  • Confirm whether Kubernetes Kubernetes is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-8555.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-8555

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-8555 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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