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Securepoint SSL VPN Client 2.0.30 Local Privilege Escalation

Securepoint SSL VPN Client 2.0.30 Local Privilege Escalation
Posted Jun 30, 2021
Authored by Florian Bogner | Site bogner.sh

Securepoint SSL VPN Client version 2.0.30 suffers from a local privilege escalation vulnerability.

tags | exploit, local
advisories | CVE-2021-35523
SHA-256 | 089fd391bbbeb7b8efda804fd0ad063d9c658488180ed9ca54ab3ba8f1db9424

Securepoint SSL VPN Client 2.0.30 Local Privilege Escalation

Change Mirror Download
Local Privilege Escalation in Securepoint SSL VPN Client 2.0.30

Metadata
===================================================
Release Date: 29-Jun-2021
Author: Florian Bogner @ https://bee-itsecurity.at
Affected product: Securepoint SSL VPN Client
Fixed in: version 2.0.32
Tested on: Windows 10 x64 fully patched
CVE: CVE-2021-35523
URL: https://bogner.sh/2021/06/local-privilege-escalation-in-securepoint-ssl-vpn-client-2-0-30/
Vulnerability Status: Fixed with new release

Vulnerability Description (copied from the CVE Details)
===================================================
Securepoint SSL VPN Client v2 before 2.0.32 on Windows has unsafe configuration handling that enables local privilege escalation to NT AUTHORITY\SYSTEM. A non-privileged local user can modify the OpenVPN configuration stored under "%APPDATA%\Securepoint SSL VPN" and add a external script file that is executed as privileged user.

A full vulnerability description is available here: https://bogner.sh/2021/06/local-privilege-escalation-in-securepoint-ssl-vpn-client-2-0-30/

Suggested Solution
===================================================
End-users should update to the latest available version.

Disclosure Timeline
===================================================
14.04.2021: The vulnerability was discovered and reported to security@securepoint.de
15.04.2021: The report was triaged
26.04.2021: Securepoint SSL VPN Client Version 2.0.32 was released, which contains an initial fix for the vulnerability
23.06.2021: Securepoint SSL VPN Client Version 2.0.34 was released, which contains additional security measures.
28.06.2021: CVE-2021-35523 was assigned: https://nvd.nist.gov/vuln/detail/CVE-2021-35523
29.06.2021: Responsible disclosure in cooperation with Securepoint: https://github.com/Securepoint/openvpn-client/security/advisories/GHSA-v8p8-4w8f-qh34

___________

Florian Bogner
Information Security Expert, Speaker

Bee IT Security Consulting GmbH
Nibelungenstraße 37
3123 A-Schweinern

Mail: florian.bogner@bee-itsecurity.at
Web: https://www.bee-itsecurity.at





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