// For flags

CVE-2023-46850

Ubuntu Security Notice USN-6484-1

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.

Use after free en OpenVPN versión 2.6.0 a 2.6.6 puede provocar un comportamiento indefinido, pérdida de búferes de memoria o ejecución remota al enviar búferes de red a un par remoto.

It was discovered that OpenVPN incorrectly handled the --fragment option in certain configurations. A remote attacker could possibly use this issue to cause OpenVPN to crash, resulting in a denial of service. It was discovered that OpenVPN incorrectly handled certain memory operations. A remote attacker could use this issue to cause OpenVPN to crash, obtain sensitive information, or possibly execute arbitrary code.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2023-10-27 CVE Reserved
  • 2023-11-11 CVE Published
  • 2025-02-13 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-416: Use After Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Openvpn
Search vendor "Openvpn"
 Openvpn
Search vendor "Openvpn" for product "Openvpn"
 >= 2.6.0 <= 2.6.6
Search vendor "Openvpn" for product "Openvpn" and version " >= 2.6.0 <= 2.6.6"
community
Affected
Openvpn
Search vendor "Openvpn"
 Openvpn Access Server
Search vendor "Openvpn" for product "Openvpn Access Server"
 >= 2.11.0 <= 2.11.3
Search vendor "Openvpn" for product "Openvpn Access Server" and version " >= 2.11.0 <= 2.11.3"
-
Affected
Openvpn
Search vendor "Openvpn"
 Openvpn Access Server
Search vendor "Openvpn" for product "Openvpn Access Server"
 >= 2.12.0 < 2.12.2
Search vendor "Openvpn" for product "Openvpn Access Server" and version " >= 2.12.0 < 2.12.2"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 12.0
Search vendor "Debian" for product "Debian Linux" and version "12.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 39
Search vendor "Fedoraproject" for product "Fedora" and version "39"
-
Affected