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CVE-2023-38200: cve-details

A flaw was found in Keylime. Due to their blocking nature, the Keylime registrar is subject to a remote denial of service against its SSL connections. This flaw allows an attacker to exhaust all available connections.

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#vulnerability#red_hat#dos#ssl

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Red Hat Security Advisory 2023-5080-01

Red Hat Security Advisory 2023-5080-01 - Keylime is a TPM based highly scalable remote boot attestation and runtime integrity measurement solution. Issues addressed include bypass and denial of service vulnerabilities.

RHSA-2023:5080: Red Hat Security Advisory: keylime security update

An update for keylime is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-38200: A flaw was found in Keylime. Due to their blocking nature, the Keylime registrar is subject to a remote denial of service against its SSL connections. This flaw allows an attacker to exhaust all available connections. * CVE-2023-38201: A flaw was found in the Keylime registrar that could allow a bypass of the challenge-response protocol during ag...

GHSA-pg75-v6fp-8q59: Keylime's registrar vulnerable to Denial-of-service attack via a single open connection

### Impact 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`. ### Patches Users should upgrade to release 7.4.0

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