Graylog Collector Service Path Privilege Escalation

vendor:

Graylog Collector

by:

Joey Lane

7,2

CVSS

HIGH

Privilege Escalation

269

CWE

Product Name: Graylog Collector

Affected Version From: 0.4.2

Affected Version To: 0.4.2

Patch Exists: NO

Related CWE: N/A

CPE: a:graylog2:graylog_collector

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 Server 2012 R2

2016

Graylog Collector Service Path Privilege Escalation

Graylog Collector installs as a service with an unquoted service path. If the user installs this service in a directory containing a space, this will create a privilege escalation vulnerability. To properly exploit this vulnerability, a local attacker can insert an executable file in the path of the service. Rebooting the system or restarting the service will run the malicious executable with elevated privileges.

Mitigation:

Ensure that the service path is properly quoted and does not contain any spaces.

Source

Exploit-DB raw data:

# Exploit Title: Graylog Collector Service Path Privilege Escalation
# Date: 10/14/2016
# Exploit Author: Joey Lane
# Software Link: https://github.com/Graylog2/collector
# Version: 0.4.2
# Tested on: Windows Server 2012 R2

Graylog Collector installs as a service with an unquoted service path.  If
the user installs this service in a directory containing a space, this will
create a privilege escalation vulnerability.  To properly exploit this
vulnerability, a local attacker can insert an executable file in the path
of the service.  Rebooting the system or restarting the service will run
the malicious executable with elevated privileges.


This was tested on version 0.4.2, but may affect other versions as well.


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

C:\sc qc GraylogCollector
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: GraylogCollector
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\graylog collector\bin\windows\graylog-collector-service-x86.exe //RS//GraylogCollector
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : Graylog Collector (GraylogCollector)
        DEPENDENCIES       : Tcpip
                           : Afd
        SERVICE_START_NAME : LocalSystem

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


EXAMPLE:

Using the BINARY_PATH_NAME listed above as an example, an executable named
"graylog.exe" could be placed in "C:\", and it would be executed as the
Local System user next time the service was restarted.