Vulnerabilities (CVE)

Filtered by vendor Openvpn Subscribe
Total 48 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2020-11462 1 Openvpn 1 Openvpn Access Server 2023-12-10 4.3 MEDIUM 7.5 HIGH
An issue was discovered in OpenVPN Access Server before 2.7.0 and 2.8.x before 2.8.3. With the full featured RPC2 interface enabled, it is possible to achieve a temporary DoS state of the management interface when sending an XML Entity Expansion (XEE) payload to the XMLRPC based RPC2 interface. The duration of the DoS state depends on available memory and CPU speed. The default restricted mode of the RPC2 interface is NOT vulnerable.
CVE-2020-15074 1 Openvpn 1 Openvpn Access Server 2023-12-10 5.0 MEDIUM 7.5 HIGH
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.
CVE-2020-8953 1 Openvpn 1 Openvpn Access Server 2023-12-10 7.5 HIGH 9.8 CRITICAL
OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a user is enrolled in two-factor authentication).
CVE-2020-9442 2 Microsoft, Openvpn 2 Windows, Connect 2023-12-10 7.2 HIGH 7.8 HIGH
OpenVPN Connect 3.1.0.361 on Windows has Insecure Permissions for %PROGRAMDATA%\OpenVPN Connect\drivers\tap\amd64\win10, which allows local users to gain privileges by copying a malicious drvstore.dll there.
CVE-2018-9336 2 Openvpn, Slackware 2 Openvpn, Slackware Linux 2023-12-10 4.6 MEDIUM 7.8 HIGH
openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the interactive service. This could cause a denial-of-service through memory corruption or possibly have unspecified other impact including privilege escalation.
CVE-2017-12166 2 Debian, Openvpn 2 Debian Linux, Openvpn 2023-12-10 6.8 MEDIUM 9.8 CRITICAL
OpenVPN versions before 2.3.3 and 2.4.x before 2.4.4 are vulnerable to a buffer overflow vulnerability when key-method 1 is used, possibly resulting in code execution.
CVE-2017-7522 1 Openvpn 1 Openvpn 2023-12-10 4.0 MEDIUM 6.5 MEDIUM
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character.
CVE-2017-7520 1 Openvpn 1 Openvpn 2023-12-10 4.0 MEDIUM 7.4 HIGH
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service and/or possibly sensitive memory leak triggered by man-in-the-middle attacker.
CVE-2017-7508 1 Openvpn 1 Openvpn 2023-12-10 5.0 MEDIUM 7.5 HIGH
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service when receiving malformed IPv6 packet.
CVE-2017-7521 1 Openvpn 1 Openvpn 2023-12-10 4.3 MEDIUM 5.9 MEDIUM
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().
CVE-2017-5868 1 Openvpn 1 Openvpn Access Server 2023-12-10 4.3 MEDIUM 6.1 MEDIUM
CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation attacks and possibly HTTP response splitting attacks via "%0A" characters in the PATH_INFO to __session_start__/.
CVE-2017-7479 1 Openvpn 1 Openvpn 2023-12-10 4.0 MEDIUM 6.5 MEDIUM
OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.
CVE-2016-6329 1 Openvpn 1 Openvpn 2023-12-10 4.3 MEDIUM 5.9 MEDIUM
OpenVPN, when using a 64-bit block cipher, makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTP-over-OpenVPN session using Blowfish in CBC mode, aka a "Sweet32" attack.
CVE-2017-7478 1 Openvpn 1 Openvpn 2023-12-10 5.0 MEDIUM 7.5 HIGH
OpenVPN version 2.3.12 and newer is vulnerable to unauthenticated Denial of Service of server via received large control packet. Note that this issue is fixed in 2.3.15 and 2.4.2.
CVE-2014-9104 1 Openvpn 1 Openvpn Access Server 2023-12-10 6.8 MEDIUM N/A
Multiple cross-site request forgery (CSRF) vulnerabilities in the XML-RPC API in the Desktop Client in OpenVPN Access Server 1.5.6 and earlier allow remote attackers to hijack the authentication of administrators for requests that (1) disconnecting established VPN sessions, (2) connect to arbitrary VPN servers, or (3) create VPN profiles and execute arbitrary commands via crafted API requests.
CVE-2014-8104 5 Canonical, Debian, Mageia and 2 more 6 Ubuntu Linux, Debian Linux, Mageia and 3 more 2023-12-10 6.8 MEDIUM N/A
OpenVPN 2.x before 2.0.11, 2.1.x, 2.2.x before 2.2.3, and 2.3.x before 2.3.6 allows remote authenticated users to cause a denial of service (server crash) via a small control channel packet.
CVE-2013-2692 1 Openvpn 1 Openvpn Access Server 2023-12-10 6.8 MEDIUM N/A
Cross-site request forgery (CSRF) vulnerability in the Admin web interface in OpenVPN Access Server before 1.8.5 allows remote attackers to hijack the authentication of administrators for requests that create administrative users.
CVE-2014-5455 2 Openvpn, Privatetunnel 2 Openvpn, Privatetunnel 2023-12-10 6.9 MEDIUM N/A
Unquoted Windows search path vulnerability in the ptservice service prior to PrivateTunnel version 3.0 (Windows) and OpenVPN Connect version 3.1 (Windows) allows local users to gain privileges via a crafted program.exe file in the %SYSTEMDRIVE% folder.
CVE-2013-2061 2 Opensuse, Openvpn 3 Opensuse, Openvpn, Openvpn Access Server 2023-12-10 2.6 LOW N/A
The openvpn_decrypt function in crypto.c in OpenVPN 2.3.0 and earlier, when running in UDP mode, allows remote attackers to obtain sensitive information via a timing attack involving an HMAC comparison function that does not run in constant time and a padding oracle attack on the CBC mode cipher.
CVE-2008-3459 1 Openvpn 1 Openvpn 2023-12-10 7.6 HIGH N/A
Unspecified vulnerability in OpenVPN 2.1-beta14 through 2.1-rc8, when running on non-Windows systems, allows remote servers to execute arbitrary commands via crafted (1) lladdr and (2) iproute configuration directives, probably related to shell metacharacters.