What is CVE-2023-38200?

CVE-2023-38200 is a high-severity vulnerability in Keylime, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-07-24.

How severe is CVE-2023-38200?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2023-38200 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Keylime

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.

Vulnerability class: DoS (Denial of Service)

Published 2023-07-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.014 (72.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Keylime
Fedoraproject Fedora — versions 38
Red Hat Enterprise Linux 9 — versions 0:6.5.2-6.el9_2
Red Hat Enterprise Linux — versions 9.0
Red Hat Enterprise Linux Eus — versions 9.2
Red Hat Enterprise Linux For IBM Z Systems — versions 9.0_s390x
Red Hat Enterprise Linux For IBM Z Systems Eus — versions 9.2_s390x
Red Hat Enterprise Linux For Power Little Endian — versions 9.0_ppc64le
Red Hat Enterprise Linux For Power Little Endian Eus — versions 9.0_ppc64le
Red Hat Enterprise Linux Server Aus — versions 9.2

Weakness classification (CWE)

Public proof-of-concept exploits

References

access.redhat.com/errata/RHSA-2023:5080 (vendor-advisory, Third Party Advisory)
access.redhat.com/security/cve/CVE-2023-38200 (Third Party Advisory, vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
github.com/keylime/keylime/pull/1421 (Patch)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-38200?: CVE-2023-38200 is a high-severity vulnerability in Keylime, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-07-24.
How severe is CVE-2023-38200?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-38200 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.