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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-6420

Keylime: keylime: security bypass due to hardcoded tpm quote nonce

Description

A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent runs, can exploit a vulnerability in the Keylime verifier. The verifier uses a hardcoded challenge nonce for Trusted Platform Module (TPM) quote attestation instead of a cryptographically random value. This allows the attacker to stockpile valid TPM quotes and replay them to evade detection after compromising the system. This issue affects only the push model deployment.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

keylime

Default version status: unaffected

  • 7.14.0 to < 7.14.2affected

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

  • 0:7.14.1-5.el10_2.1 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

References