Out-of-bounds write in SecuExtender SSL VPN client for Windows - CVE-2023-5593

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Main Vulnerability Database Vulnerabilities #VU83320

Out-of-bounds write in SecuExtender SSL VPN client for Windows - CVE-2023-5593

Published: November 21, 2023


Vulnerability identifier: #VU83320
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2023-5593
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: ZyXEL Communications Corp.
Affected software:
SecuExtender SSL VPN client for Windows

Detailed vulnerability description

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

The vulnerability exists due to a boundary error. A local user can send a specially crafted CREATE message to trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


How to mitigate CVE-2023-5593

Install updates from vendor's website.

Sources