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Advisories

Kyverno before 1.16.4 Credential Leak via apiCall

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severity
high
date
Affecting

  • kyverno >= 0, < 1.16.4

CWE
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CVSS
8.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Credit
scumfrog
Description
Kyverno before 1.16.4 automatically attaches the admission controller's ServiceAccount token to outbound HTTP requests in apiCall service mode without explicit authorization headers. Attackers can exfiltrate the token by directing apiCall requests to external or attacker-controlled endpoints, gaining full control over Kyverno policies and cluster resources.

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