7 Advisories Published – 07-11-19

Yesterday the DHS NCCIC-ICS published six industrial control system advisories for products from Schneider Electric (2), AVEVA, Siemens (3) and Delta Industrial. They also published a medical device security advisory for products from Philips.

Interactive Graphical SCADA Advisory

This advisory describes an out-of-bounds write vulnerability in the Schneider Interactive Graphical SCADA System (IGSS). The vulnerability was reported by mdm and rgod of 9SG Security Team via the Zero Day Initiative. Schneider has new versions 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 an uncharacterized attacker with uncharacterized access could exploit the vulnerability to  allow an attacker to achieve arbitrary code execution or crash the software.

Floating License Manager Advisory

This advisory describes four vulnerabilities in the Schneider Floating License Manager. The vulnerabilities are self-reported. According to the Schneider advisory, the vulnerabilities are in a third-party component (Flexera FlexNet Publisher) of their product. Schneider has a patch available that mitigates the vulnerability.

The four reported vulnerabilities are:

• Improper input validation (3) - CVE-2018-20031, CVE-2018-20032, and CVE-2018-20034; and

• Memory corruption - CVE-2018-20033

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit these vulnerabilities to allow an attacker to deny the acquisition of a valid license for legal use of the product.

NOTE: There are still three other advisories published by Schneider on Tuesday that have not been reported by NCCIC-ICS; all for Modicon controllers. I will address these on Saturday.;

AVEVA Advisory

This advisory describes the same four vulnerabilities reported above, this time in the AVEVA Vijeo Citect and Citect SCADA Floating License Manager. These vulnerabilities have not yet been reported by AVEVA. A new version is available from Schneider to mitigate the vulnerabilities.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit these vulnerabilities to allow an attacker to deny the acquisition of a valid license for legal use of the product.

SIMATIC Advisory

This advisory describes three vulnerabilities in the Siemens SIMATIC RF6XXR. The vulnerabilities are in older, third-party SSL and TLS applications still in use by these products. The vulnerabilities were reported by Wendy Parrington from United Utilities. Siemens reports that newer versions mitigate the vulnerabilities.

The three reported vulnerabilities are:

• Improper input validation - CVE-2011-3389; and

• Cryptographic issues (2) - CVE-2016-6329 and CVE-2013-0169

NCCIC-ICS reports that an uncharacterized attacker could use publicly available exploits (two of these are older, well recognized vulnerabilities) to remotely exploit the vulnerabilities to allow access to sensitive information.

TIA Portal Advisory

This advisory describes an improper access control vulnerability in the Siemens TIA Administrator (TIA Portal). The vulnerability was reported (with proof of concept code) by Joseph Bingham of Tenable. Siemens has an update that mitigates the vulnerability. There is no indication that Bingham 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 execution of some commands without proper authentication.

SIMATIC WinCC Advisory

This advisory describes an unrestricted upload of file with dangerous type vulnerability in the Siemens SIMATIC WinCC and SIMATIC PCS7 devices. The vulnerability was reported by Xuchen Zhu from ZheJiang Guoli Security Technology. Siemens has updates available that mitigates the vulnerability. There is no indication that Xuchen 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 cause a denial-of-service condition on the affected service or device. The Siemens advisory notes that the attacker has to be authenticated with a valid user account.

NOTE: There is still one new advisory that Siemens published on Tuesday that has not been reported by NCCIC-ICS. I will cover it tomorrow.

Delta Industrial Advisory

This advisory describes two vulnerabilities in the Delta Electronics CNCSoft ScreenEditor. The vulnerability was reported by Natnael Samson (@NattiSamson) via ZDI. Delta has a new version that mitigates the vulnerabilities. There is no indication that Samson was provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Heap-based buffer overflow - CVE-2019-10982; and

• Out-of-bounds read - CVE-2019-10992

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to cause buffer overflow conditions that may allow information disclosure, remote code execution, or crash the application.

Philips Advisory

This advisory describes a use of obsolete function vulnerability in the Philips Holter 2010 Plus, a 12-lead EKG analysis software program. The vulnerability is self-reported. Philips provides generic measures to mitigate the vulnerability.

NCCIC-ICS reports that an uncharacterized attacker with uncharacterized access could exploit this vulnerability to lead to a product feature escalation.