CVE-2020-15074

CVSS V2 Medium 5 CVSS V3 High 7.5

Description

OpenVPN Access Server older than version 2.8.4 and version 2.9.5 generates new user authentication tokens instead of reusing exiting tokens on reconnect making it possible to circumvent the initial token expiry timestamp.

Overview

CVE ID
CVE-2020-15074

Assigner
security@openvpn.net

Vulnerability Status
Analyzed

Published Version
2020-07-14T18:15:14

Last Modified Date
2021-11-23T22:25:50

Weakness Enumerations

CWE	URL
CWE-613	http://cwe.mitre.org/data/definitions/613.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:openvpn:openvpn_access_server::::::::	1	OR		2.8.4
cpe:2.3:a:openvpn:openvpn_access_server::::::::	1	OR	2.9.0	2.9.6

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:N/I:P/A:N

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
PARTIAL

Availability Impact
NONE

Base Score
5

Severity
MEDIUM

Exploitability Score
10

Impact Score
2.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
NONE

Base Score
7.5

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
3.6

References

Reference URL	Reference Tags
https://openvpn.net/vpn-server-resources/release-notes/	Release Notes Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-15074
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15074

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:45:06				Added to TrackCVE
2022-12-04 19:27:27	2020-07-14T18:15Z	2020-07-14T18:15:14	CVE Published Date	updated
2022-12-04 19:27:27		2021-11-23T22:25:50	CVE Modified Date	updated
2022-12-04 19:27:27		Analyzed	Vulnerability Status	updated