Headline
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
Keylime’s registrar vulnerable to Denial-of-service attack via a single open connection
High severity GitHub Reviewed Published Aug 1, 2023 in keylime/keylime • Updated Aug 1, 2023
Related news
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.
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...
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.