Public ICS Disclosure – Week of 2-7-20

This week we have eight vendor disclosures for products from Siemens (2), Schneider Electric, Phoenix Contact, HMS, ABB (2) and Moxa. We also have three advisory updates from Siemens and one from Schneider.

Siemens Advisories

Siemens published an advisory describing three vulnerabilities found in Intel chips used in Siemens products. The vulnerabilities were identified and reported (advisory links below) by Intel. Siemens has provided generic workarounds to mitigate the vulnerabilities.

The three reported vulnerabilities are:

• Insufficient memory protection (2) - CVE-2019-0151 and CVE-2019-0152; and

• Heap-based buffer overflow - CVE-2019-0169

Siemens published an advisory describing a resource allocation vulnerability in their Profinet-IO stack. The vulnerability was reported by Yuval Ardon and Matan Dobrushin from OTORIO. Siemens has updates that mitigate the vulnerability. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

Schneider Advisory

Schneider Published an advisory describing an uncontrolled search path element vulnerability in their ProSoft Configurator. The vulnerability was reported by Yongjun Liu from nsfocus. Schneider has a new version that mitigates the vulnerability. There is no indication that Yongiun has been provided an opportunity to verify the efficacy of the fix.

Phoenix Contact Advisory

Phoenix Contact has published an advisory [.PDF download link] describing a remote configuration vulnerability in their Emalytics Controllers. The vulnerability was reported by Anil Parmar. Phoenix Contact has a new firmware version that mitigates the vulnerability. There is no indication that Parmar has been provided an opportunity to verify the efficacy of the fix.

HMS Advisory

HMS has published an advisory describing a cross-site scripting vulnerability in their Flexy and Cosy products. The vulnerability was reported by Ander Martínez from Titanium Industrial Security. HMS has a new firmware version that mitigates the vulnerability. There is no indication that Martinez has been provided an opportunity to verify the efficacy of the fix.

ABB Advisories

ABB published an advisory describing a direct object reference vulnerability in their Asset Suite product. The vulnerability is self-reported. ABB has a new version that mitigates the vulnerability.

ABB published an advisory describing 14 vulnerabilities in their eSOMS product. The vulnerabilities are self-reported. ABB has a new version that mitigates the vulnerabilities.

Moxa Advisory

Moxa published an advisory describing 8 vulnerabilities in their OnCell cellular gateway. The vulnerabilities were reported by Alexander Zaytsev from Kaspersky Lab. Moxa has new firmware versions that mitigate the vulnerabilities. There is no indication that Zaytsey has been provided an opportunity to verify the efficacy of the fix.

Siemens Updates

Siemens published an update to their  Linux TCP SACK PANIC advisory for Industrial Products that was originally published on September 10^th, 2019 and most recently updated on November 14^th, 2019. The new information includes revised version data and mitigation links for:

• TIM 1531 IRC;

• SIMATIC CP 1242-7, CP 1243-7 LTE (EU andUS versions), CP 1243-1, CP 1243-8 IRC, CP 1543-1, CP 1542SP-1, CP 1542SP1 IRC, CP 1543SP-1; and

• SCALANCE W1700.

NOTE: NCCIC-ICS updated their advisory on February 11^th, but did not list it on their web site.

Siemens published an update for their ZombieLoad advisory that was originally published on July 9^th, 2019 and most recently updated on December 10^th, 2019. The new information includes updated version data and mitigation links for:

• SIMATIC IPC547E;

• SIMATIC IPC347E; and

• SIMATIC IPC3000 SMART V2

Siemens published an update for their GNU/Linux subsystem vulnerabilities advisory that was originally published on November 27^th, 2018 and most recently updated on January 14^th, 2020. The new information includes adding the following new vulnerabilities;

• CVE-2019-5188;

• CVE-2019-11190;

• CVE-2019-19956;

• CVE-2019-20054,

• CVE-2019-20079;

• CVE-2019-20388; and

• CVE-2020-7595

Schneider Update

Schneider published an update for their U.motion Builder advisory that was originally published on April 5^th, 2018. The new information includes an updated remediation section.

13 Advisories and 5 Updates Published – 2-11-20

Today the CISA NCCIC-ICS published 13 control system security advisories for products from Synergy Systems and Solutions, Digi International and Siemens (11). They also updated five control system security advisories for products from Siemens.

Synergy Systems Advisory

This advisory describes two vulnerabilities in the SSS HUSKY RTU. The vulnerabilities were reported by VAPT Team, C3i Center. SSS has a new version that mitigates the vulnerabilities. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Improper authentication - CVE-2019-20046; and

• Improper input validation - CVE-2019-20045

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit these vulnerabilities to allow an attacker to read sensitive information, execute arbitrary code, or cause a denial-of-service condition.

Digi Advisory

This advisory describes two vulnerabilities in the Digi ConnectPort LTS 32 MEI. The vulnerabilities were reported by Murat Aydemir and Fatih Kayran of Biznet Bilisim. Digi has a new release that mitigates the vulnerabilities. There is no indication that the researchers have been provided with an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Unrestricted upload of file with dangerous type - CVE-2020-6975; and

• Cross-site scripting - CVE-2020-6973

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to limit system availability.

SIPROTEC Advisory

This advisory describes an improper input validation vulnerability in the Siemens SIPROTEC 4 and SIPROTEC Compact. The vulnerability was reported by Tal Keren from Claroty. Siemens has provided generic workarounds to mitigate the vulnerability.

NCCIC-ICS reports that an uncharacterized attacker could remotely exploit the vulnerability to conduct a denial-of-service attack over the network.

SIMATIC S7-1500 Advisory

This advisory describes a resource exhaustion vulnerability in the Siemens SIMATIC S7-1500 CPU family. The vulnerability is self-reported. Siemens has provided generic workarounds to mitigate the vulnerability.

NCCIC-ICS reports that an uncharacterized attacker could remotely exploit the vulnerability to conduct denial-of-service attacks.

SCALANCE S-600 Advisory

This advisory describes three vulnerabilities in the Siemens SCALANCE S-600 Firewall. One of the vulnerabilities was reported by Melih Berk Ekşioğlu. Siemens has provided generic workarounds to mitigate the vulnerability.

The three reported vulnerabilities are:

• Cross-site scripting - CVE-2019-6585; and

• Uncontrolled resource consumption (2) - CVE-2019-13925 and CVE-2019-13926

NCCIC-ICS reports that an uncharacterized attacker could remotely exploit the vulnerability to conduct denial-of-service or cross-site scripting attacks. User interaction is required for a successful exploitation of the cross-site-scripting attack.

OZW Web Server Advisory

This advisory describes and information disclosure vulnerability in the Siemens OZW web server. The vulnerability was reported by Maxim Rupp. Siemens has a new version that mitigates the vulnerability. There is no indication that Maxim has been provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit this vulnerability to allow unauthenticated users to access project files.

SIPORT Advisory

This advisory describes an insufficient logging vulnerability in the Siemens SIPORT MP. The vulnerability is self-reported. Siemens has a new version that mitigates the vulnerability.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to allow the attacker to create special accounts with administrative privileges.

SCALANCE Advisory

This advisory describes a protection mechanism failure vulnerability in the Siemens SCALANCE X switches. The vulnerability is self-reported. Siemens has updates that mitigate the vulnerability.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit this vulnerability to allow an attacker to perform administrative actions.

SIMATIC PCS 7 Advisory

This advisory describes an incorrect calculation of buffer size vulnerability in the Siemens SIMATIC PCS 7, SIMATIC WinCC, SIMATIC NET PC products. The vulnerability was reported by Nicholas Miles from Tenable. Siemens has new versions that mitigate the vulnerability. There is no indication that Miles has been provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to allow an attacker with network access to cause a denial-of-service condition.

SIMATIC S7 Advisory

This advisory describes a resource exhaustion vulnerability in the Siemens SIMATIC S7 devices. The vulnerability was reported by China Industrial Control Systems Cyber Emergency Response Team. Siemens has a new version that mitigates the vulnerability. There is no indication that the researchers were provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit this vulnerability to allow remote attackers to perform a denial-of-service attack by sending a specially crafted HTTP request to the web server of an affected device.

PROFINET Advisory

This advisory describes a resource exhaustion vulnerability in the Siemens PROFINET-IO Stack. The vulnerability was reported by Yuval Ardon and Matan Dobrushin of OTORIO. Siemens has updates that mitigate the vulnerability. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit this vulnerability to lead to a denial-of-service condition.

NOTE: OTORIO reports that this same vulnerability is found in multiple vendor products including the Moxa EDS Ethernet Switches.

SIMATIC CP Advisory

This advisory describes two vulnerabilities in the Siemens SIMATIC CP 1543-1. The vulnerabilities are self-reported. Siemens has a new version that mitigates the vulnerabilities.

The two reported vulnerabilities are:

• Improper access control - CVE-2019-12815; and

• Loop with unreachable exit condition - CVE-2019-18217

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit these vulnerabilities to allow for remote code execution and information disclosure without authentication, or unauthenticated denial of service.

Industrial Products Advisory

This advisory describes two vulnerabilities in the Siemens SCALANCE, SIMATIC, SIPLUS products. The vulnerabilities were reported by Artem Zinenko of Kaspersky Lab. Siemens has new versions that mitigate the vulnerabilities. There is no indication that Zinenko has been provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Data processing errors - CVE-2015-5621; and

• Null pointer dereference - CVE-2018-18065

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit these vulnerabilities to allow remote attackers to conduct a denial-of-service attack by sending specially crafted packets to Port 161/UDP (SNMP).

SIMOCODE Update

This update provides additional information on an advisory that was originally published on March 9th, 2019 and most recently updated on January 14^th, 2020. The new information includes the addition of two affected products:

• SITOP PSU8600; and

• TIM 1531 IRC

Industrial Products w/OPC UA Update

This update provides additional information on an advisory that was originally published on April 9th, 2019 and most recently updated on January 14^th, 2020. The new information includes updated affected version data and mitigation links for SIMATIC NET PC Software.

PROFINET Update

This update provides additional information on an advisory that was originally published on October 10^th, 2019 and most recently updated on January 14^th, 2020. The new information includes updated affected version data and mitigation links for SINAMICS DCP.

Industrial Real Time Devices Update

This update provides additional information on an advisory that was originally published on October 10^th, 2019 and most recently updated on January 14^th, 2020. The new information includes updated affected version data and mitigation links for SINAMICS DCP.

SIMATIC Update

This update provides additional information on an advisory that was originally published on December 10th, 2019. The new information includes updated affected version data and mitigation links for:

• TIM 1531 IRC;

• SIMATIC NET PC Software

Other Siemens Advisories and Updates

Siemens also published two additional advisories and 3 updates yesterday that have not yet been addressed by NCCIC-ICS.

Additionally, on Monday Siemens published updates of 58 previously published advisories. All of these updates were adding references to the SIPLUS device variants as affected products. Siemens has been adding references to this as they have been updating advisories for the last couple of months, so it looks like they are just doing the final house cleaning on the issue. I do not expect NCCIC-ICS to update all of their applicable advisories.

Public ICS Disclosures – Week of 11-16-19

This week we have four vendor disclosures for products from 3S, Moxa (2) and Johnson Controls. There are also three exploit reports for products from Emerson, FlowChief, and GE.

3S Advisory

3S published an advisory describing a heap-based buffer overflow vulnerability in their CODESYS V3 web server. The vulnerability was reported by an OEM customer and Tenable, Inc. 3S has a new version that mitigates the vulnerability. There is no indication that Tenable was provided an opportunity to verify the efficacy of the fix.

NOTE 1: The Tenable report provides proof-of-concept exploit code.

NOTE 2: A reminder that 3S (Codesys) software is included in product from a large number of vendors (including the unnamed ‘OEM vendor’ who reported the vulnerability to 3S). Other vendors will have to fix the problem in their systems.

Moxa Advisories

Moxa published an advisory describing a denial of service vulnerability in the PROFINET implementation in their Moxa’s EDS-G508E, EDS-512E, and EDS-516E Series Ethernet Switches. The vulnerability was reported by Yuval Ardon and Matan Dobrushin of Otorio. Moxa has a patch available that mitigates the vulnerability. There is no indication that the researchers were provided an opportunity to verify the efficacy of the fix.

Moxa published an advisory describing an improper sanitization of special elements used in Web GUI in their EDR-810 Series Secure Routers. The vulnerability was reported by Neil Pope and Rhys Cable of Motherwell Advanced Technologies Cyber Review Team. Moxa has a new firmware version that mitigates the vulnerability. There is no indication that the researchers were provided an opportunity to verify the efficacy of the fix.

Johnson Controls Advisory

Johnson Controls has published an advisory on the BlueKeep vulnerability in their  4190 PC Annunciator product running on Windows 7® systems. The 4190 PC Annunciator is out-of-support and Johnson Controls has no replacement product.

Emerson Exploit

Luiz Martinez published an exploit for an unquoted service path vulnerability in the Emerson PAC Machine. There is no CVE number associated with this report and no information about coordination with Emerson. This may be a 0-day exploit.

FlowChief Exploit

Luiz Martinez published an exploit for a denial-of-service vulnerability in the FlowChief scadaApp for iOS. There is no CVE number associated with this report and no information about coordination with FlowChief. This may be a 0-day exploit.

GE Exploit

Luiz Martinez published an exploit for a denial-of-service vulnerability in the GE Open Proficy HMI-SCADA app. There is no CVE number associated with this report and no information about coordination with GE. This may be a 0-day exploit.

Commentary

With all three of the above exploits being potential 0-days, the question will certainly arise; why did I publish these notices? Am I not giving publicity to researchers who cannot be bothered coordinating their disclosures? My intention is to ensure that the users of the affected systems know that public exploits are available. This would be valuable information for risk assessment purposes and lacking the information that is widely available to the ‘bad guys’ is not a good way to stay safe and secure.

Now I would much rather see researchers like Martinez coordinate their disclosure with the vendor or one of any of a wide variety of disclosure coordinators (NCCIC-ICS or ZDI for instance). Lacking that, I would rather see them publishing on public forums like FullDisclosure or exploit-DB than selling the exploits on the DarkWeb.