Vulnerability Name:

CVE-2022-33738 (CCN-230686)

Assigned:2022-06-29
Published:2022-06-29
Updated:2022-07-15
Summary:OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
9.1 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
7.9 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
9.4 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-338
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2022-33738

Source: XF
Type: UNKNOWN
openvpn-cve202233738-weak-security(230686)

Source: CCN
Type: OpenVPN Web site
OpenVPN Access Server 2.11.0

Source: MISC
Type: Release Notes, Vendor Advisory
https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0

Vulnerable Configuration:Configuration 1:
  • cpe:/a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:* (Version < 2.11.0)

    • * Denotes that component is vulnerable
    BACK
    openvpn openvpn access server *