4 Advisories Published – 08-15-19

Yesterday the DHS NCCIC-ICS published four control system security advisories for products from Siemens (2), Fuji Electric, and Johnson Controls.

SINAMICS Advisory

This advisory describes an uncontrolled resource consumption vulnerability in the web server of the Siemens SINAMICS control units. The vulnerability is self-reported. Siemens has updates available to mitigate the vulnerability.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to allow an attacker to perform a denial-of-service attack.

SCALANCE Advisory

This advisory describes two instances of an improper adherence to coding standards vulnerability in the Siemens SCALANCE products. The vulnerability is self-reported. Siemens has an update available that mitigates the vulnerability.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerabilities to  lead to a denial of service or could allow an authenticated local user with physical access to the device to execute arbitrary commands on the device.

NOTE: There are still two advisories and an update that were published by Siemens earlier this week that have not been addressed by NCCIC-ICS. I will report further on them tomorrow.

Fuji Advisory

This advisory describes a stack-based buffer overflow in the Fuji Alpha5 Smart Loader servo  drive. The vulnerability was reported by Natnael Samson (@NattiSamson) via the Zero Day Initiative. Fuji has a new version that mitigates the vulnerability. There is no indication that Samson 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 code under the privileges of the application.

Johnson Controls Advisory

This advisory describes two vulnerabilities in the Johnson Controls Metasys building automation system. The vulnerability was reported by harpocrates.ghost. Johnson Controls has a new version that mitigates the vulnerabilities. There is no indication that the researcher has been provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Reusing a nonce, key-pair in an encryption - CVE-2019-7593; and

• Use of hard-coded cryptographic key - CVE-2019-7594

NCCIC-ICS reports that an uncharacterized attacker could remotely exploit these vulnerabilities to decrypt captured network traffic.

Four advisories Published – 02-19-19

Today the DHS NCCIC published four control system security advisories for products from Rockwell Automation, Horner Automation, Delta Industrial and Intel.

Rockwell Advisory

This advisory describes two vulnerabilities in the Rockwell Allen-Bradley PowerMonitor 1000. This vulnerability was reported by Luca Chiou of ACSI. Rockwell is working on mitigation measures. CheckPoint Software Technologies has released IPS rules to detect attempts to exploit CVE-2019-19615.

The two reported vulnerabilities are:

• Cross-site scripting - CVE-2019-19615; and

• Authentication bypass using alternate path or channel - CVE-2019-19616

NCCIC-ICS reports that a relatively low-skilled attacker could use a publicly available exploits (here and here) to remotely exploit these vulnerabilities to allow a remote attacker to affect the confidentiality, integrity, and availability of the device.

NOTE: I discussed these vulnerabilities last Saturday.

Horner Advisory

This advisory describes an improper input validation vulnerability in the Horner Cscape control system application programming software. The vulnerability was reported by ‘anonymous’ via the Zero Day Initiative (ZDI). Horner has a new version that mitigates the vulnerability. There is no indication that anonymous 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 crash the device being accessed, which may allow the attacker to read confidential information and remotely execute arbitrary code.

Delta Advisory

This advisory describes an out-of-bounds read vulnerability in the Delta Industrial Automation CNCSoft. The vulnerability was reported by Natnael Samson (@NattiSamson) via ZDI. Delta has an updated version that mitigates the vulnerability. There is no indication that Samson 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 the vulnerability to cause a buffer overflow condition that may allow information disclosure or crash the application.

Intel Advisory

This advisory describes eleven vulnerabilities in the Intel Data Center Manager SDK. The vulnerability was reported by Intel’s Product Security Incident Response Team. Intel has a new version that mitigates the vulnerability.

The eleven reported vulnerabilities are:

• Improper authentication - CVE-2019-0102;

• Protection mechanism failure (4) - CVE-2019-0103, CVE-2019-0104, CVE-2019-0106, and CVE-2019-0107,

• Permission issues (4) - CVE-2019-0105, CVE-2019-0108, CVE-2019-0109, and CVE-2019-0111;

• Key management issues - CVE-2019-0110;

• Insufficient control flow management - CVE-2019-0112

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to allow escalation of privilege, denial of service, or information disclosure.