# CVE-2023-3674: keylime fails to flag device as untrusted when signature does not validate

Source: https://junglewise.ai/threats/cve-2023-3674-keylime-fails-to-flag-device-as-untrusted-when-signature-does-not  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-07-19  
License: CC BY 4.0 with a link back

CVE-2023-3674 · Severity: low · CVSS 3.1 · Published 2023-07-19

A flaw was found in the keylime attestation verifier, which fails to flag a device's submitted TPM quote as faulty when the quote's signature does not validate for some reason. Instead, it will only emit an error in the log without flagging the device as untrusted.

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

## Quick answers

**Is CVE-2023-3674 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-3674 being exploited in the wild.

**How severe is CVE-2023-3674?** Low severity, with a CVSS score of 3.1, published 19 July 2023.

**Which products and versions are affected?** keylime (PyPI) ECOSYSTEM:introduced=0,fixed=7.2.5, GIT:introduced=0,fixed=95ce3d86bd2c53009108ffda2dcf553312d733db|ECOSYSTEM:introduced=0,fixed=7.2.5.

**Is there a fix for CVE-2023-3674?** Yes. keylime (PyPI): upgrade to 7.2.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-3674?** 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 7.2.5 or later

  ```sh
  pip install "keylime>=7.2.5"
  ```


## Affected products

- keylime (PyPI) ECOSYSTEM:introduced=0,fixed=7.2.5, GIT:introduced=0,fixed=95ce3d86bd2c53009108ffda2dcf553312d733db|ECOSYSTEM:introduced=0,fixed=7.2.5

## Identifiers

- CVE-2023-3674
- GHSA-g4wg-cfpf-9689
- PYSEC-2023-128

## 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)