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AUSCERT External Security Bulletin Redistribution
ESB-2021.0418
Advisory (icsa-21-035-01) Luxion KeyShot
5 February 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Luxion KeyShot
Publisher: ICS-CERT
Operating System: Windows
Mac OS
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Create Arbitrary Files -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-22651 CVE-2021-22649 CVE-2021-22647
CVE-2021-22645 CVE-2021-22643
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-21-035-01
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ICS Advisory (ICSA-21-035-01)
Luxion KeyShot
Original release date: February 04, 2021
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For more
information about TLP, see https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 7.8
o ATTENTION: Low skill level to exploit
o Vendor: Luxion
o Equipment: KeyShot products
o Vulnerabilities: Out-of-bounds Write, Out-of-bounds Read, Insufficient UI
Warning of Dangerous Operations, Untrusted Pointer Dereference, Path
Traversal
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow arbitrary code
execution, the storing of arbitrary scripts into automatic startup folders, and
the attacking of products without sufficient UI warning.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Luxion software, 3D rendering and animation software,
are affected:
o KeyShot versions prior to 10.1
o KeyShot Viewer versions prior to 10.1
o KeyShot Network Rendering versions prior to 10.1
o KeyVR versions prior to 10.1
3.2 VULNERABILITY OVERVIEW
3.2.1 OUT-OF-BOUNDS WRITE CWE-787
The affected product is vulnerable to multiple out-of-bounds write issues while
processing project files, which may allow an attacker to execute arbitrary
code.
CVE-2021-22647 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/
C:H/I:H/A:H ).
3.2.2 OUT-OF-BOUNDS READ CWE-125
The affected product is vulnerable to an out-of-bounds read while processing
project files, which may allow an attacker to execute arbitrary code.
CVE-2021-22643 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/
C:H/I:H/A:H ).
3.2.3 INSUFFICIENT UI WARNING OF DANGEROUS OPERATIONS CWE-357
The affected product is vulnerable to an attack because the .bip documents
display a "load" command, which can be pointed to a .dll from a remote network
share. As a result, the .dll entry point can be executed without sufficient UI
warning.
CVE-2021-22645 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/
C:H/I:H/A:H ).
3.2.4 UNTRUSTED POINTER DEREFERENCE CWE-822
The affected product has multiple NULL pointer dereference issues while
processing project files, which may allow an attacker to execute arbitrary
code.
CVE-2021-22649 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/
C:H/I:H/A:H ).
3.2.5 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY ('PATH
TRAVERSAL') CWE-22
When loading a specially crafted file, the application, while processing the
extraction of temporary files, suffers from a directory traversal
vulnerability, which allows an attacker to store arbitrary scripts into
automatic startup folders.
CVE-2021-22651 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/
C:H/I:H/A:H ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
rgod, working with Trend Micro's Zero Day Initiative, reported these
vulnerabilities to CISA.
4. MITIGATIONS
Luxion has released an update to KeyShot (v10.1) and recommends users update to
the latest version.
CISA also recommends users take the following measures to protect themselves
from social engineering attacks:
o Do not click web links or open unsolicited attachments in email messages.
o Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
o Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
CISA recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities.
CISA reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices
on the ICS webpage on us-cert.cisa.gov . Several recommended practices are
available for reading and download, including Improving Industrial Control
Systems Cybersecurity with Defense-in-Depth Strategies .
Additional mitigation guidance and recommended practices are publicly available
on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to CISA for tracking
and correlation against other incidents.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.
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