# CVE-2023-38201: Keylime registrar and (untrusted) Agent can be bypassed by an attacker

Source: https://junglewise.ai/threats/cve-2023-38201-keylime-registrar-and-untrusted-agent-can-be-bypassed-by-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-08-25  
License: CC BY 4.0 with a link back

CVE-2023-38201 · Severity: low · CVSS 3.1 · Published 2023-08-25

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.

Technologies: [keylime (PyPI)](https://junglewise.ai/threats/technologies/keylime). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2023-38201 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-38201 being exploited in the wild.

**How severe is CVE-2023-38201?** Low severity, with a CVSS score of 3.1, published 25 August 2023.

**Which products and versions are affected?** keylime (PyPI) ECOSYSTEM:introduced=0,fixed=7.5.0, GIT:introduced=0,fixed=9e5ac9f25cd400b16d5969f531cee28290543f2a|ECOSYSTEM:introduced=0,fixed=7.5.0.

**Is there a fix for CVE-2023-38201?** Yes. keylime (PyPI): upgrade to 7.5.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-38201?** Check whether you run keylime (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- keylime (PyPI): upgrade to 7.5.0 or later

  ```sh
  pip install "keylime>=7.5.0"
  ```


## Affected products

- keylime (PyPI) ECOSYSTEM:introduced=0,fixed=7.5.0, GIT:introduced=0,fixed=9e5ac9f25cd400b16d5969f531cee28290543f2a|ECOSYSTEM:introduced=0,fixed=7.5.0

## Identifiers

- CVE-2023-38201
- GHSA-f4r5-q63f-gcww
- PYSEC-2023-160

## Related threats

- [PYSEC-2026-1489 - Keylime's registrar vulnerable to Denial-of-service attack via a single open connection](https://junglewise.ai/threats/cve-2023-38200-keylime-s-registrar-vulnerable-to-denial-of-service-attack-via-a)
- [Keylime security bypass via hardcoded TPM attestation nonce](https://junglewise.ai/threats/keylime-security-bypass-via-hardcoded-tpm-attestation-nonce-16dcb84a)
- [Keylime security bypass via hardcoded TPM quote nonce](https://junglewise.ai/threats/cve-2026-6420-keylime-security-bypass-via-hardcoded-tpm-quote-nonce)
- [Keylime registrar authentication bypass via missing TLS validation](https://junglewise.ai/threats/keylime-registrar-authentication-bypass-via-missing-tls-validation-f26498d5)
- [Keylime authentication bypass in registrar component](https://junglewise.ai/threats/cve-2026-1709-keylime-authentication-bypass-in-registrar-component)