Use of Predictable Algorithm in Random Number Generator Affecting keylime-registrar package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-RHEL9-KEYLIMEREGISTRAR-16431067
  • published6 May 2026
  • disclosed6 May 2026

Introduced: 6 May 2026

CVE-2026-6420  (opens in a new tab)
CWE-1241  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:9 keylime-registrar.

NVD Description

Note: Versions mentioned in the description apply only to the upstream keylime-registrar package and not the keylime-registrar package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1