3 Advisories and 1 Update Published – 7-28-20

Today the CISA NCCIC-ICS published three control system security advisories for products from HMS Industrial Networks, Softing Industrial, and Secomea. They also published an update for an advisory for products from Delta Industrial Automation.

HMS Advisory

This advisory describes a stack-based buffer overflow in the HMS eCatcher VPN client. The vulnerability was reported by Sharon Brizinov of Claroty. HMS has a new version that mitigates the vulnerability. There is no indication that Brizinov 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 crash the device being accessed. In addition, a buffer overflow condition may allow remote code execution with highest privileges.

NOTE: I briefly discussed this vulnerability earlier this month.

Softing Advisory

This advisory describes two vulnerabilities in the Softing OPC. The vulnerabilities were reported by Uri Katz of Claroty. Softing has a new version that mitigates the vulnerability. There is no indication that Katz has been provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Heap-based buffer overflow - CVE-2020-14524, and

• Uncontrolled resource consumption - CVE-2020-14522

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerabilities to crash the device being accessed. A buffer-overflow condition may also allow remote code execution.

Secomea Advisory

This advisory describes four vulnerabilities in the Secomea GateManager VPN manager. The vulnerabilities were reported by Sharon Brizinov and Tal Keren of Claroty. Secomea has a new versin that mitigates the vulnerabilities. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

The four reported vulnerabilities are:

• Improper neutralization of null byte or null character - CVE-2020-14500,

• Off-by-one error - CVE-2020-14508,

• Use of hard-coded credentials - CVE-2020-14510, and

• Use of password hash with insufficient computational effort - CVE-2020-14512

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to allow a remote attacker to gain remote code execution on the device.

Delta Update

This update provides additional information on an advisory that was originally published on June 30^th, 2020. The new information includes a link to a new version that mitigates the vulnerabilities.