what you don't know can hurt you

FANUC Robotics Virtual Robot Controller 8.23 Buffer Overflow

FANUC Robotics Virtual Robot Controller 8.23 Buffer Overflow
Posted Jul 16, 2019
Authored by Sebastian Hamann

FANUC Robotics Virtual Robot Controller version 8.23 suffers from a stack-based buffer overflow vulnerability.

tags | exploit, overflow
advisories | CVE-2019-13585
MD5 | 24accc856caa22d0d70441294d2efb6a

FANUC Robotics Virtual Robot Controller 8.23 Buffer Overflow

Change Mirror Download

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

Advisory ID: SYSS-2019-024
Product: FANUC Robotics Virtual Robot Controller
Manufacturer: FANUC Robotics America, Inc.
Affected Version(s): V8.23
Tested Version(s): V8.23
Vulnerability Type: Stack-based Buffer Overflow (CWE-121)
Risk Level: High
Solution Status: Open
Manufacturer Notification: 2019-05-22
Solution Date: ?
Public Disclosure: 2019-07-15
CVE Reference: CVE-2019-13585
Author of Advisory: Sebastian Hamann, SySS GmbH

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Overview:

FANUC Robotics Virtual Robot Controller is an application for
programming simulated industry robots.

Due to a stack-based buffer overflow, the remote admin web server
(vrimserve.exe) is vulnerable to denial-of-service and remote code
execution attacks.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Vulnerability Details:

vrimserve.exe offers an HTTP service on TCP port 8090, which can be used
to control virtual robots and view their log files.

A buffer overflow vulnerability was discovered in the log viewer
functionality. By sending a specially crafted HTTP request to the HTTP
server, the application can be crashed causing a denial-of-service
condition.

Remote code execution may also be possible, but was not confirmed
by SySS GmbH. Gaining control over the instruction pointer (EIP) of this
32 bit application by exploiting the stack-based buffer overflow
vulnerability was successful.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Proof of Concept (PoC):

SySS GmbH developed a proof-of-concept exploit that crashes
vrimserve.exe. It is to note that the exploit gives control over the EIP
register, which is an important prerequisite for remote code execution.

curl "http://${target_host}:8090/namedrobots/folder/dir/<1268 bytes>BBBBCCCCCCCCC"

The bytes denoted as B overwrite the EIP register.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Solution:

The vendor has not yet released a security update.

It is recommended not making the remote admin web server (vrimserve.exe)
available to untrusted networks.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Disclosure Timeline:

2019-04-23: Vulnerability discovered
2019-05-22: Vulnerability reported to manufacturer
2019-07-15: Public release of SySS security advisory

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

References:

[1] Manufacturer website:
https://www.fanucamerica.com/
[2] SySS Security Advisory SYSS-2019-024
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2019-024.txt
[3] SySS Responsible Disclosure Policy
https://www.syss.de/en/news/responsible-disclosure-policy/

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Credits:

This security vulnerability was found by Sebastian Hamann of SySS GmbH.

E-Mail: sebastian.hamann@syss.de
Public Key: https://www.syss.de/fileadmin/dokumente/PGPKeys/Sebastian_Hamann.asc
Key ID: 0x9CE0E440429D8B96
Key Fingerprint: F643 DF21 62C4 7C53 7DB2 8BA1 9CE0 E440 429D 8B96

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Disclaimer:

The information provided in this security advisory is provided "as is"
and without warranty of any kind. Details of this security advisory may
be updated in order to provide as accurate information as possible. The
latest version of this security advisory is available on the SySS Web
site.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Copyright:

Creative Commons - Attribution (by) - Version 3.0
URL: http://creativecommons.org/licenses/by/3.0/deed.en
-----BEGIN PGP SIGNATURE-----
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=hm7Q
-----END PGP SIGNATURE-----

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

October 2019

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Oct 1st
    24 Files
  • 2
    Oct 2nd
    15 Files
  • 3
    Oct 3rd
    7 Files
  • 4
    Oct 4th
    4 Files
  • 5
    Oct 5th
    10 Files
  • 6
    Oct 6th
    1 Files
  • 7
    Oct 7th
    21 Files
  • 8
    Oct 8th
    19 Files
  • 9
    Oct 9th
    5 Files
  • 10
    Oct 10th
    20 Files
  • 11
    Oct 11th
    17 Files
  • 12
    Oct 12th
    4 Files
  • 13
    Oct 13th
    4 Files
  • 14
    Oct 14th
    15 Files
  • 15
    Oct 15th
    6 Files
  • 16
    Oct 16th
    0 Files
  • 17
    Oct 17th
    0 Files
  • 18
    Oct 18th
    0 Files
  • 19
    Oct 19th
    0 Files
  • 20
    Oct 20th
    0 Files
  • 21
    Oct 21st
    0 Files
  • 22
    Oct 22nd
    0 Files
  • 23
    Oct 23rd
    0 Files
  • 24
    Oct 24th
    0 Files
  • 25
    Oct 25th
    0 Files
  • 26
    Oct 26th
    0 Files
  • 27
    Oct 27th
    0 Files
  • 28
    Oct 28th
    0 Files
  • 29
    Oct 29th
    0 Files
  • 30
    Oct 30th
    0 Files
  • 31
    Oct 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close