https://cxsecurity.com/issue/WLB-2021060173


http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-202106-1900

Securepoint SSL VPN Client是开源的一个SSL VPN 客户端，适用于 Windows。 Securepoint SSL VPN Client v2 中存在访问控制错误漏洞，该漏洞源于未对软件的配置功能做安全处理。 攻击者可通过将本地权限升级到NT AUTHORITYSYSTEM，从而允许本地非特权用户可以修改“\\%APPDATA\\%Securepoint SSL VPN 下的OpenVPN配置，并添加一个以特权用户身份执行的外部脚本文件。以下产品及版本受到影响：Windows上2.0.32之前的Securepoint SSL VPN Client v2。

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 [email protected]
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: [email protected]
Web: https://www.bee-itsecurity.at
 
 

来源:MISC

链接:https://github.com/Securepoint/openvpn-client/security/advisories/GHSA-v8p8-4w8f-qh34

来源:MISC

链接:https://bogner.sh/2021/04/local-privilege-escalation-in-securepoint-ssl-vpn-client-2-0-30/