2 Advisories Published – 03-19-19

Today the DHS NCCIC-ICS published two control system security advisories for products from Columbia Weather Systems and AVEVA.

Columbia Advisory

This advisory describes six vulnerabilities in the Columbia Weather MicroServer weather monitoring system. The vulnerabilities were reported by John Elder and Tom Westenberg of Applied Risk. Columbia has a firmware update that mitigates the vulnerability. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

The six reported vulnerabilities are:

• Cross-site scripting (2) - CVE-2018-18875 and CVE-2018-18880;

• Path traversal - CVE-2018-18876;

• Improper authentication - CVE-2018-18877;

• Improper input validation - CVE-2018-18878; and

• Code injection - CVE-2018-18879

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit these vulnerabilities to allow disclosure of data, cause a denial-of-service condition, and allow remote code execution.

AVEVA Advisory

This advisory describes an uncontrolled search path element vulnerability in the AVEVA InduSoft Web Studio, InTouch Edge HMI products. The vulnerability is in a third-party component; Gemalto Sentinel UltraPro encryption keys (separately reported last week). The vulnerability was reported by ADLab of Venustech. AVEVA has updates available to 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 with uncharacterized access could exploit this vulnerability to allow execution of unauthorized code or commands.

NOTE: I wonder how many other vendors are using the Gemalto product?

3 Advisories Published – 03-14-19

Today the DHS NCCIC-ICS published three control system security advisories for products from PEPPERL+FUCHS, Gemalto and Leão Consultoria e Desenvolvimento de Sistemas Ltda (LCDS).

PEPPERL+FUCHS Advisory

This advisory describes a path traversal vulnerability in the PEPPERL+FUCHS WirelessHART-Gateways. The vulnerability was publicly reported (with exploit) by Hamit CİBO. PEPPERL+FUCHS has firmware upgrades to mitigate the vulnerability.

NCCIC-ICS reports that a relatively low-skilled attacker could use publicly available code to remotely exploit this vulnerability to allow access to files and restricted directories stored on the device through the manipulation of file parameters.

NOTE: I briefly reported on this vulnerability last Saturday.

Gemalto Advisory

This advisory describes an uncontrolled search path element in the Gemalto Sentinel UltraPro. The vulnerability was reported by ADLab of Venustech. Gemalto has a software update to mitigate 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 with uncharacterized access could exploit this vulnerability to load and execute a malicious file from the ux32w.dll in Sentinel UltraPro.

NOTE: Gemalto issued an early warning to upgrade the UltraPro software back on January 19^th, 2019 with a restricted link to their advisory on this product. I do not know what information was included in that advisory.

LCDS Advisory

This advisory describes an out-of-bounds write vulnerability in the LCDS LAquis SCADA. The vulnerability was reported by Mat Powel via the Zero Day Infitiative. LCDS has a new version that mitigates the vulnerability. There is no indication that Powel was provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that a relatively low-skilled attacker with uncharacterized access could exploit this vulnerability to allow remote code execution.

Public ICS Disclosure – Week of 12-15-18

This week we have five vendor notifications for products from Schneider Electric (3), Yokogawa and 3S (5).

Schneider Advisories

Schneider published an advisory for three vulnerabilities in their EVLink Parking product. The vulnerabilities were reported by Vladimir Kononovich and Vyacheslav Moskvin (Positive

Technologies). Schneider 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 three vulnerabilities are:

• Hard-coded credentials - CVE-2018-7800;

• Code injection - CVE-2018-7801; and

• SQL injection - CVE-2018-7802

Schneider published an advisory for an input validation vulnerability in their Pro-Face GP-Pro EX product. The vulnerability was reported by Yu Quiang (ADLab of Venustech). Schneider has a new version that mitigates the vulnerability. Schneider has an update that mitigates the vulnerability. There is no indication that Yu has been provided an opportunity to verify the efficacy of the fix.

Schneider published an advisory for three vulnerabilities in their IIoT Monitor product. The vunlerabilities were reported by rgod via the Zero Day Initiative. Schneider has a new product that mitigates the vulnerability. There is no indication that rgod has been provided an opportunity to verify the efficacy of the fix.

The three reported vulnerabilities are:

• Path traversal - CVE-2018-7835;

• Unrestricted upload of file with dangerous type - CVE-2018-7836; and

• Improper restriction of XML esternal reference entity reference - CVE-2018-7837

NOTE: I expect that we will see these three advisories reported by NCCIC-ICS next week if they are allowed to continue to report during the upcoming financial idiocy. NCCIC will operate, but the ICS reporting function might not be allowed to continue until a funding bill is signed by the President.

Yokogawa Advisory

Yokogawa published an advisory for a denial of service vulnerability in their  Vnet/IP Open

Communication Driver. The vulnerability appears to be self-reported. Yokogawa has a patch for many of the products to mitigate the vulnerability, but many of the affected products are no longer supported.

3S Advisories

3S published an advisory for an information exposure vulnerability in their CODESYS Development System V3. The vulnerability was reported by Heinz Füglister of WRH Walter Reist Holding AG. 3S has a new version that mitigates the vulnerability. There is no indication that Füglister has been provided an opportunity to verify the efficacy of the fix.

3S published an advisory for two denial of service vulnerabilities in their CODESYS V3 products. The vulnerabilities were reported by ABB Switzerland Ltd. and Jérôme Vialle of Schneider Electric. 3S has a new version that mitigates the vulnerability. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

3S published an advisory for two denial of service vulnerabilities in their CODESYS Development System V3 Alarm configuration application. These vulnerabilities are being self-reported. 3S has a new version that mitigates the vulnerabilities.

3S published an advisory for two denial of service vulnerabilities in their CODESYS Control V3 TLS socket communication application. These vulnerabilities were reported by an unidentified OEM customer. 3S has new versions that mitigate the vulnerabilities. There is no indication that the customer was provided an opportunity to verify the efficacy of the fix.

3S published an advisory for two denial of service vulnerabilities in the CODESYS Control V3 Trace Manager application. These vulnerabilities were reported by an unidentified OEM customer. 3S has new versions that mitigate the vulnerabilities. There is no indication that the customer was provided an opportunity to verify the efficacy of the fix.

NOTE: As is obvious from the researchers who identified most of the 3S vulnerabilities, 3S software is used by a number of ICS vendors. It will be interesting to see how many of those vendors self-identify these vulnerabilities in their products. Since 3S does not report CVE numbers for any of these vulnerabilities, it will be hard to track.

Four Advisories and One Update Published

Yesterday the DHS NCCIC-ICS published four new control system security advisories for products from Fr. Sauter, Circontrol, Schneider Electric, AVEVA. They also updated a previously published advisory for products from Rockwell.

Sauter Advisory

This advisory describes an improper restriction of XML external entity reference in the Sauter CASE Suite application. The vulnerability was reported by Gjoko Krstic of Applied Risk. Sauter has an update that mitigates the vulnerability. There is no indication that Krstic 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 to remotely retrieve unauthorized files from the system.

Circontrol Advisory

This advisory describes two vulnerabilities in the Circontrol CirCarLife electric vehicle charging station. The vulnerabilities were reported by Ankit Anubhav of NewSky Security, M. Can Kurnaz Senior Consultant at KPMG Netherlands, Alim Solmaz Security Consultant at Atos, Michael John Chief Information Security Officer at WePower Network, and Gyorgy Miru Security Researcher at Verint. Circontrol has a new version that mitigates the vulnerability. There is no indication that any of the researchers have been provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Authentication bypass using an alternate path or channel - CVE-2018-17918; and

• Insufficiently protected credentials - CVE-2018-17922

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerabilities to allow a remote attacker to retrieve credentials stored in clear text to bypass authentication, and see and access critical information.

Schneider Advisory

This advisory describes a DLL hijacking vulnerability in the Schneider Software Update (SESU) installed with a wide variety of Schneider products. The vulnerability was reported by Haojun Hou of ADLab of Venustech. Schneider has an update that mitigates the vulnerability. There is no indication hat Haojun has been provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that a relatively low-skilled attacker with uncharacterized access could exploit the vulnerability to allow an attacker to execute arbitrary code on the target system.

NOTE: I had previously discussed this vulnerability last weekend.

AVEVA Advisory

This advisory describes two vulnerabilities in the AVEVA InduSoft Web Studio and InTouch Edge HMI. These vulnerabilities were reported by Tenable. AVEVA has new versions that mitigate the vulnerabilities. There is no indication that Tenable was provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Stack-based buffer overflow - CVE-2018-17916; and

• Empty password in configuration file - CVE-2018-17914

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerabilities to allow an unauthenticated user to remotely execute code.

Rockwell Update

This update provides additional information on an advisory that was originally published on October 26^th, 2017. The update provides new mitigation information based upon new limitations on the impact of the vulnerability.

NOTE: This is the KRACK vulnerability advisory for the Rockwell Stratix 5100 Wireless Access Point/Workgroup Bridge.

ICS-CERT Publishes 3 Advisories and One Siemens Update

Today the DHS ICS-CERT published three new control system security advisories for products from Eaton, Schneider Electric, and Hirschmann Automation. The also updated a previously issued advisory for products from Siemens.

Eaton Advisory

This advisory describes an improper input validation vulnerability in the Eaton ELCSoft programming software. The vulnerability was reported by Ariele Caltabiano (kimiya) and axt working with the Zero Day Initiative. Eaton has produced a new version of the software (ICS-CERT mistakenly refers to ‘firmware’) to mitigate this vulnerability. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

ICS-CERT reports that a relatively low-skilled attacker could remotely exploit the vulnerability to execute arbitrary code. The Eaton Security Update Advisory [.PDF Download] notes that the vulnerability only affects the Windows® based PCs that run the software, not the programmable logic controllers being programed.

Schneider Advisory

This advisory describes an uncontrolled search path element vulnerability in the Schneider SoMove software and DTM software components. The vulnerability was reported by ADLab of Venustech (NOTE: The Schneider security notification credits Haojun Hou from Adon with reporting the vulnerability). Schneider has produced new software versions that mitigate the vulnerabilities. There is no indication that the researchers have been afforded an opportunity to verify the efficacy of the fix.

ICS-CERT reports that an uncharacterized attacker with uncharacterized access could exploit the vulnerability to execute arbitrary code.

Hirschmann Advisory

This advisory describes multiple vulnerabilities in the Hirschmann Classic Platform Switches. These vulnerabilities were reported by Ilya Karpov, Evgeniy Druzhinin, Mikhail Tsvetkov, and Damir Zainullin of Positive Technologies. Hirschmann provides workarounds to mitigate the vulnerabilities; there is no indication that additional mitigation measures are forthcoming. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

The five reported vulnerabilities are:

• Session fixition - CVE-2018-5465;

• Information exposure through query strings in get requests - CVE-2018-546;

• Cleartext transmission of sensitive information - CVE-2018-5471;

• Inadequate encryption strength - CVE-2018-5461; and

• Improper restriction of excessive authentication requests - CVE-2018-5469

ICS-CERT reports that a highly-skilled attacker could remotely exploit these vulnerabilities to hijack web sessions, impersonate a legitimate user, receive sensitive information, and gain access to the device.

Siemens Update

This update provides new information on an advisory that was was originally published on May 9^th, 2017 and updated on June 15, 2017,on July 25^th, 2017, on August 17^th, 2017, on October 10^th, on November 14^th,  November 28^th, 2017, and most recently January 18^th, 2018, January 25^th, 2018, and most recently on January 27^th, 2018. The new information is a link to mitigation measures for SCALANCE X-200IRT. ICS-CERT did not update the affected version information for this product to include the latest information in the Siemens security advisory; all versions before V5.4.0 are affected.

ICS-CERT Publishes Three Advisories

Today the DHS ICS-CERT published two control system security advisories for products from Advantech and AzeoTech. They also published a medical device advisory for products from Abbott Laboratories.

Advantech Advisory

This advisory describes nine vulnerabilities in the Advantech WebAccess HMI platform. The vulnerabilities were reported by  Fritz Sands, independent researcher rgod, Tenable Network Security, and an anonymous researcher (all via Zero Day Initiative), and Haojun Hou and DongWang from ADLab of Venustech. Advantech has released a new version to mitigate the vulnerabilities. There is no indication that any of the researchers have been provided an opportunity to verify the efficacy of the fix.

The nine reported vulnerabilities are:

• Improper neutralization of special elements used in an SQL command - CVE-2017-12710;

• Improper restriction of operations within the bounds of a memory buffer - CVE-2017-12708;

• Stack-based buffer overflow -CVE-2017-12706;

• Heap-based buffer overflow - CVE-2017-12704;

• Use of externally-controlled format string - CVE-2017-12702;

• Improper authentication - CVE-2017-12698;

• Incorrect permission assignment for critical resource - CVE-2017-12713;

• Incorrect privilege assignment - CVE-2017-12711; and

• Uncontrolled search path element - CVE-2017-12711

ICS-CERT reports that a relatively low skilled attacker could remotely exploit these vulnerabilities to allow remote code execution or unauthorized access and could cause the device that the attacker is accessing to crash.

NOTE: Earlier this month I mentioned that there were  a large number of ‘pending’ vulnerability reports on Advantech products currently listed on the ZDI web site. These are not those vulnerabilities; those are still apparently being resolved.

AzeoTech Advisory

This advisory describes two vulnerabilities in the AzeoTech DAQFactory HMI. The vulnerabilities were reported by Karn Ganeshen. AzeoTech has produced a new version that mitigates the vulnerabilities. There is no indication that Ganeshen was provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Incorrect default permissions - CVE-2017-12699; and

• Uncontrolled search path element - CVE-2017-5147

ICS-CERT reports that an authenticated user with local access could exploit the vulnerabilities to escalate their privileges and modify or replace application files.

Abbott Labs Advisory

This advisory describes three vulnerabilities in the Abbot Labs (formerly St. Jude Medical) pacemakers. The vulnerabilities were reported by MedSec. Abbott has produced a firmware update that mitigates the vulnerability. ICS-CERT reports that an unidentified third-party has verified the efficacy of the fix. The FDA Safety Communication notes that the firmware update must be applied during “an in-person patient visit with a health care provider”.

The three reported vulnerabilities are:

• Improper authentication - CVE-2017-12712;

• Improper restriction of power consumption - CVE-2017-12714; and

• Missing encryption of sensitive data - CVE-2017-12716

ICS-CERT reports that an uncharacterized attacker near the patient could exploit the vulnerabilities to gain unauthorized access to a pacemaker and issue commands, change settings, or otherwise interfere with the intended function of the pacemaker.