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Advisories

Kyverno from 1.11.0 before 1.19.2 Memory Exhaustion via Notary Attestation Decompression

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Severity
high
Date
Affecting

  • kyverno >= 1.11.0, < 1.19.2

CWE
  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
1seal
Description
Kyverno from 1.11.0 before 1.19.2 contains an unbounded decompression vulnerability in extractStatement that allows remote attackers to exhaust memory by supplying highly compressed attestation layers. Attackers controlling registry referrer artifacts can push gzip predicate layers exceeding maxPayloadSize when decompressed, causing admission controller OOM kills and denial of service.

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