CVE-2024-13454

CA key recovery via 3DES encryption downgrade

Published Jan 20, 2025 · Updated Jan 21, 2025

Weak CA-key encryption in OpenVPN Inc. Easy-RSA 3.0.5 through 3.1.7 allows local users to brute-force protected CA keys. The build_ca function passes an AES-encrypted temporary key to openssl req as both -key and -keyout, causing OpenSSL 3 to overwrite it with des-ede3-cbc encryption. Exploitation requires local access to a password-protected CA key created with build-ca under OpenSSL 3, exposing the CA signing key if its passphrase is recovered.

CVSS severity5.3
Medium
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak CA-key encryption in OpenVPN Inc. Easy-RSA 3.0.5 through 3.1.7 allows local users to brute-force protected CA keys. The build_ca function passes an AES-encrypted temporary key to openssl req as both -key and -keyout, causing OpenSSL 3 to overwrite it with des-ede3-cbc encryption. Exploitation requires local access to a password-protected CA key created with build-ca under OpenSSL 3, exposing the CA signing key if its passphrase is recovered.

The record

CVE
CVE-2024-13454
Published
Jan 20, 2025
Updated
Jan 21, 2025
Vendor
OpenVPN Inc.
Product
Easy-RSA
Classifications
CWE-326, T1110.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.5 <=3.1.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OpenVPN Inc. · Easy-RSAversion=3.0.5 <=3.1.7

Published CVSS scores

5.3CISA ADP VulnrichmentCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength
T1110.002Password Cracking

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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