CVE-2023-38200High· 7.5▾ TwilightKeylime's registrar vulnerable to Denial-of-service attack via a single open connection
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.3 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
1.1%
1.1% → 1.4%
Keylime registrar is prone to a simple denial of service attack in which an adversary opens a connection to the TLS port (by default, port 8891) blocking further, legitimate connections. As long as the connection is open, the registrar is blocked and cannot serve any further clients (agents and tenants), which prevents normal operation. The problem does not affect the verifier.
Users should upgrade to release 7.4.0
keylime < 7.4.0Upgrade to a patched release:
keylime 7.4.0Connected by shared product, vendor, weakness, or advisory.
CVE-2022-1053Critical· 9.1Tenant and Verifier might not use the same registrar data
CVE-2023-38201Medium· 6.5Keylime registrar and (untrusted) Agent can be bypassed by an attacker
CVE-2026-1709Critical· 9.4A flaw was found in Keylime