SB2024032065 - Multiple vulnerabilities in OpenVPN server for Windows

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Main Vulnerability Database SB2024032065

SB2024032065 - Multiple vulnerabilities in OpenVPN server for Windows

Published: March 20, 2024 Updated: March 25, 2024

Security Bulletin ID SB2024032065
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 25% Low 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Stack-based buffer overflow (CVE-ID: CVE-2024-27459)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the interactive service component. A local user can trigger a stack-based buffer overflow and execute arbitrary code with elevated privileges.

The vulnerability affects Windows installations only.


2) Improper access control (CVE-ID: CVE-2024-24974)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions to the interactive service pipe. A remote user can bypass implemented security restrictions and gain unauthorized access to the application.

The vulnerability affects Windows installations only.


3) Untrusted search path (CVE-ID: CVE-2024-27903)

CWE-ID: CWE-426 - Untrusted Search Path

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to usage of an untrusted search path in plugins. A local user can place a malicious binary into a specific location on the system and execute arbitrary code with escalated privileges.

The vulnerability affects Windows installations only.


4) Integer overflow (CVE-ID: CVE-2024-1305)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer overflow in !TapSharedSendPacket within the Windows TAP driver. A local user can trigger integer overflow and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References