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SOYAL 701Client 9.0.1 Insecure Permissions

SOYAL 701Client 9.0.1 Insecure Permissions
Posted Mar 19, 2021
Authored by LiquidWorm | Site zeroscience.mk

SOYAL 701Client version 9.0.1 suffers from an insecure permissions vulnerability.

tags | exploit
SHA-256 | 98c780d8c151eac1f051e4d317f17b2296da9de1759ad6d0d93bec928bcc775c

SOYAL 701Client 9.0.1 Insecure Permissions

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SOYAL 701Client 9.0.1 Insecure Permissions


Vendor: SOYAL Technology Co., Ltd
Product web page: https://www.soyal.com.tw | https://www.soyal.com
Affected version: 9.0.1 190410
9.0.1 190115

Summary: 701 Client is the user interface software for the access control
system. It is used for adding and deleting tokens, setting door groups
for access, setting time zones for limiting access and monitoring ingress
and egress on a live system, among other things.

Desc: The application suffers from an elevation of privileges vulnerability
which can be used by a simple authenticated user that can change the
executable file with a binary of choice. The vulnerability exist due
to the improper permissions, with the 'F' flag (Full) for 'Authenticated Users'
group.

Tested on: Microsoft Windows 10 Enterprise


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience


Advisory ID: ZSL-2021-5634
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5634.php


25.01.2021

--


C:\Program Files (x86)\701Client>cacls client.exe
C:\Program Files (x86)\701Client\client.exe NT AUTHORITY\Authenticated Users:F
NT AUTHORITY\Authenticated Users:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Administrators:(ID)F
BUILTIN\Users:(ID)R
APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(ID)R
APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(ID)R


C:\Program Files (x86)\701Client>
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