CVE-2023-38201

mediumpriority · track · 26EPSS 0.005 · 42 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.49% (42nd) EPSS
CVSS 6.5 · medium
Is it mine?
40 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • Fixedkeylime-0:6.5.2-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-0:6.5.2-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-0:6.5.2-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-0:6.5.2-6.el9_2.src as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-0:6.5.2-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-base-0:6.5.2-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-base-0:6.5.2-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-base-0:6.5.2-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-base-0:6.5.2-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-registrar-0:6.5.2-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-registrar-0:6.5.2-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-registrar-0:6.5.2-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-registrar-0:6.5.2-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-selinux-0:6.5.2-6.el9_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-tenant-0:6.5.2-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-tenant-0:6.5.2-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-tenant-0:6.5.2-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-tenant-0:6.5.2-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-verifier-0:6.5.2-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-verifier-0:6.5.2-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-verifier-0:6.5.2-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedkeylime-verifier-0:6.5.2-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedpython3-keylime-0:6.5.2-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedpython3-keylime-0:6.5.2-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedpython3-keylime-0:6.5.2-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
  • Fixedpython3-keylime-0:6.5.2-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2023:5080
02

cvss

Technical severity, 0–10. One row per scoring source.

6.5
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6
v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · ENISA EU
v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · secalert@redhat.com USexploitability 2.8 · impact 3.6
v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV
v3.16mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · Red Hat Product Security US
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-639USCWE-639USCWE-639US
04

affected products (40)

Products and version ranges known to be affected.

showing 20 of 40
05

advisories (4)

Vendor and ecosystem advisories describing this.

  • RHSA-2023:5080Red Hat Security Advisory: keylime security update2023-09-12csaf · redhat_csafUS

    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.

  • WID-SEC-W-2023-2323Red Hat Enterprise Linux (Keylime): Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2023-09-12csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

  • GHSA-f4r5-q63f-gcwwKeylime registrar and (untrusted) Agent can be bypassed by an attacker2023-09-06ghsa · osvUS

    ### Impact A security issue was found in the Keylime `registrar` code which allows an attacker to effectively bypass the challenge-response protocol used to verify that an `agent` has indeed access to an AIK which in indeed related to the EK. When an `agent` starts up, it will contact a `registrar` and provide a public EK and public AIK, in addition to the EK Certificate. This `registrar` will then challenge the `agent` to decrypt a challenge encrypted with the EK. When receiving the wrong "auth_tag" back from the `agent` during activation, the `registrar` answers with an error message that contains the expected correct "auth_tag" (an HMAC which is calculated within the `registrar` for checking). An attacker could simply record the correct expected "auth_tag" from the HTTP error message and perform the activate call again with the correct expected "auth_tag" for the `agent`. The security issue allows an attacker to pass the challenge-response protocol during registration with (almost) arbitrary registration data. In particular, the attacker can provide a valid EK Certificate and EK, which passes verification by the `tenant` (or `registrar`), while using a compromised AIK, which is stored unprotected outside the TPM and is unrelated to former two. The attacker then deliberately fails the initial activation call to get to know the correct "auth_tag" and then provides it in a subsequent activation call. This results in an `agent` which is (incorrectly) registered with a valid EK Certificate, but with a compromised/unrelated AIK. ### Patches Users should upgrade to release 7.5.0

  • PYSEC-2023-1602023-08-25vendor · osvUS

    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.

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdosvcert_bundnvdredhat_csafNVDCVE.orgMITRE
published 2023-08-25modified 2026-06-17
08

references (17)

External citations — patches, advisories, analysis.

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