6 Advisories Published – 08-01-19

Yesterday the DHS NCCIC-ICS published six control system advisories for products from Leão Consultoria e Desenvolvimento de Sistemas (LCDS), Rockwell, 3S (2), Fuji Electric and Advantech.

LCDS Advisory

This advisory describes two vulnerabilities in the LCDS LAquis SCADA software. The vulnerabilities were reported by Francis Provencher (PRL) via the Zero Day Initiative. LCDS has an update available that mitigates the vulnerability. There is no indication that Provencher has been provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Out-of-bounds read - CVE-2019-10994; and

• Type confusion - CVE-2019-10980

NCCIC-ICS reports that a relatively low-skilled attacker with uncharacterized access could exploit the vulnerability to allow an attacker to obtain confidential information or execute remote code.

Rockwell Advisory

This advisory describes two vulnerabilities in the Rockwell Arena Simulation Software. The vulnerabilities were reported by kimiya of 9SG Security Team via ZDI. Rockwell has a new version that mitigates the vulnerability. There is no indication that kimiya has been provided an opportunity to verify the efficacy of the fix.

• Use after free - CVE-2019-13510; and

• Information exposure - CVE-2019-13511

NCCIC-ICS reports that a relatively low-skilled attacker with uncharacterized access could exploit the vulnerabilities to allow an attacker to cause a current Arena session to fault or enter a denial-of-service (DoS) state, allowing the attacker to run arbitrary code.

First CODESYS Advisory

This advisory describes an insufficiently protected credentials vulnerability in the CmpUserMgr component of 3S CODESYS products. The vulnerability was reported by JunYoung Park. 3S will correct this vulnerability in a new version to be released in February. The 3S advisory strongly recommends activating and using encryption of online communication whenever possible.

NCCIC-ICS reports that a relatively low-skilled attacker with uncharacterized access could exploit this vulnerability to allow for an attacker with access to PLC traffic to obtain user credentials.

NOTE: Is it just me or is this advisory just a seven-month zero-day announcement?

Second CODESYS Advisory

This advisory describes two vulnerabilities in the CmpGateway component of the 3S CODESYS products. These vulnerabilities are self-reported. 3S has a new version that mitigates the vulenrabilities.

The two reported vulnerabilities are:

• Unverified ownership - CVE-2019-9010; and

• Uncontrolled memory allocation - CVE-2019-9012 

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerabilities to allow a remote attacker to close existing communication channels or to take over an already established user session to send crafted packets to a PLC.

NOTE 1: There were six other advisories published by 3S at the same time as the two referenced in these two NCCIC-ICS advisories. I will address them this weekend.

NOTE 2: A reminder that the CODESYS operating system is used in a wide variety of devices and systems. These vulnerabilities will have widespread application. Few vendors are expected to publish updates referencing these vulnerabilities.

Fuji Advisory

This advisory describes and out-of-bounds read vulnerability in the Fuji  FRENIC Loader. The vulnerability was reported by kimiya of 9SG Security Team via ZDI. Fuji has a new version that mitigates the vulnerability. There is no indication that the kimiya 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 information disclosure.

Advantech Advisory

This advisory describes an out-of-bounds write vulnerability in the Advantech WebAccess HMI Designer. The vulnerability was reported by Mat Powell via ZDI. Advantech has a new version that mitigates the vulnerability. There is no indication that Powell has been provided an opportunity to verify the efficacy of the fix.