Auth bypass in Keylime
CVE-2023-38201
A flaw was found in the Keylime registrar that could allow a bypass of the challenge-response protocol during agent registration. This issue may allow an attacker to impersonate an agent and hide the true status of a monitored machine if the fake agent is added to the verifier list by a legitimate user, resulting in a breach of the integrity of the registrar database.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.005 (40.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Keylime
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux 9 — versions 0:6.5.2-6.el9_2
- Redhat Enterprise_linux — versions 9.0
- Redhat Enterprise_linux_eus — versions 9.2
- Redhat Enterprise_linux_for_ibm_z_systems — versions 9.0_s390x
- Redhat Enterprise_linux_for_ibm_z_systems_eus — versions 9.2_s390x
- Redhat Enterprise_linux_for_power_little_endian — versions 9.0_ppc64le
- Redhat Enterprise_linux_for_power_little_endian_eus — versions 9.2_ppc64le
- Redhat Enterprise_linux_server_aus — versions 9.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Patch)
- secalert@redhat.com (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-38201?
- CVE-2023-38201 is a medium-severity vulnerability in Keylime, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2023-08-25.
- How severe is CVE-2023-38201?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-38201 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.