CVE-2022-33738 : OpenVPN Access Server before 2.11 uses a weak random generator used to create us

OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal

Published 2022-07-06 16:15:09

Updated 2022-07-15 15:16:56

Source OpenVPN Inc.

View at NVD, CVE.org

Products affected by CVE-2022-33738

Openvpn » Openvpn Access Server
Versions before (<) 2.11.0
cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.21%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 41 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE-331 Insufficient Entropy

The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

Assigned by: security@openvpn.net (Secondary)
CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.

Assigned by: nvd@nist.gov (Primary)

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