EPSON Status Monitor 3 local privilege escalation vulnerability

vendor:

Status Monitor 3

by:

Nine:Situations:Group::bruiser

7,2

CVSS

HIGH

Privilege Escalation

264

CWE

Product Name: Status Monitor 3

Affected Version From: N/A

Affected Version To: N/A

Patch Exists: NO

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows

2009

EPSON Status Monitor 3 local privilege escalation vulnerability

EPSON Status Monitor 3 is vulnerable to a local privilege escalation vulnerability due to weak permissions on two executable files, E_S40ST7.EXE and E_S40RP7.EXE, which are installed with full control for Everyone. An attacker can replace these files with a rootkit to gain elevated privileges.

Mitigation:

Ensure that the permissions on the two executable files, E_S40ST7.EXE and E_S40RP7.EXE, are set to the minimum required for the application to function.

Source

Exploit-DB raw data:

------- EPSON Status Monitor 3 local privilege escalation vulnerability --------
by Nine:Situations:Group::bruiser
site: http://retrogod.altervista.org/
--------------------------------------------------------------------------------
After that pyrokinesis found: http://www.milw0rm.com/exploits/9199
I prepared a tool to check for weak permissions and I come out with this:

C:\>sc qc EPSON_EB_RPCV4_01
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: EPSON_EB_RPCV4_01
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Documents and Settings\All Users\Application Data\EPSON\EPW!3 SSRP\E_S40ST7.EXE
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : EPSON V5 Service4(01)
        DEPENDENCIES       : RpcSs
        SERVICE_START_NAME : LocalSystem

C:\>CACLS "C:\Documents and Settings\All Users\Application Data\EPSON\EPW!3 SSRP\E_S40ST7.EXE"
C:\Documents and Settings\All Users\Application Data\EPSON\EPW!3 SSRP\E_S40ST7.EXE Everyone:F <------[ :( !!!]

C:\>SC QC EPSON_PM_RPCV4_01
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: EPSON_PM_RPCV4_01
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Documents and Settings\All Users\Application Data\EPSON\EPW!3 SSRP\E_S40RP7.EXE
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : EPSON V3 Service4(01)
        DEPENDENCIES       : RpcSs
        SERVICE_START_NAME : LocalSystem

C:\>CACLS "C:\Documents and Settings\All Users\Application Data\EPSON\EPW!3 SSRP\E_S40RP7.EXE"
C:\Documents and Settings\All Users\Application Data\EPSON\EPW!3 SSRP\E_S40RP7.EXE Everyone:F <------[ :( !!!]

The executable files are installed with "full control" for Everyone; replace
them with your favourite rootkit.
They are carried by an EPSON STYLUS SX100 drivers cd. C'mon guys, no need for an
exploit code, it can be triggered by the availiable command line tools.

--------------------------------------------------------------------------------

# milw0rm.com [2009-07-30]