Public ICS Disclosures – Week of 11-07-20

This week we have eight vendor disclosures for products from Schneider (7) and Thales Group. We also have nine updates for advisories for products from Schneider (5), Siemens (2), Carestream and Rockwell.

Schneider Advisories

Schneider published an advisory describing three vulnerabilities in the web servers of their Modicon M340, Modicon Quantum and Modicon Premium Legacy products. The vulnerabilities were reported (here and here) by Kai Wang of Fortinet's FortiGuard Labs. Schneider is working on mitigation measures for those affected products that are not end-of-life.

The three reported vulnerabilities are:

• Out-of-bounds read - CVE-2020-7562,

• Out-of-bounds write - CVE-2020-7563, and

• Classic buffer overflow - CVE-2020-7564

 

Schneider published an advisory describing an improper privilege management vulnerability in their EcoStruxure™ Operator Terminal Expert runtime (Vijeo XD). The vulnerability was reported by Lasse Trolle Borup of Danish Cyber Defence. Schneider has a service pack that mitigates the vulnerability. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

 

Schneider published an advisory describing nine vulnerabilities in their Interactive Graphical SCADA System (IGSS) product. The vulnerabilities were reported by kimiya via the Zero Day Initiative. Schneider has a new version that mitigates the vulnerabilities. There is no indication that kimiya has been provided an opportunity to verify the efficacy of the fix.

The nine reported vulnerabilities are:

• Improper restriction of operations within the bounds of a memory buffer (4) – CVE-2020-7550, CVE-2020-7551, CVE-2020-7552, and CVE-2020-7554,

• Out-of-bounds write (4) - CVE-2020-7553, CVE-2020-7555, CVE-2020-7556, and CVE-2020-7558, and

• Out-of-bounds read - CVE-2020-7557

 

Schneider published an advisory describing seven vulnerabilities in their EcoStruxure Building Operation (EBO) product offerings. The vulnerabilities were reported by Luis Vázquez, Francisco Palma, and Diego León of Zerolynx, and Alessandro Bosco, Luca Di Giuseppe, Alessandro Sabetta, Massimiliano Brolli of TIM Security Red Team Research. Schneider has a version that mitigates the vulenrabilities. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

The seven reported vulnerabilities are:

• Unrestricted upload of file with dangerous type - CVE-2020-7569,

• Cross-site scripting stored - CVE-2020-7570,

• Cross-site scripting reflected - CVE-2020-7571,

• Improper restriction of XML external entity reference - CVE-2020-7572,

• Improper access control - CVE-2020-7573,

• Windows unquoted search path - CVE-2020-28209, and

• Cross-site scripting - CVE-2020-28210

 

Schneider published an advisory describing four vulnerabilities in their Modicon M221 product. The vulnerabilities were reported by Yehuda Anikster and Rei Henigman of Claroty, and Seok Min Lim and Bryon Kaan of Trustwave (here). Schneider provides generic work arounds to mitigate the vulnerabilities.

The four reported vulnerabilities are:

• Inadequate encryption strength - CVE-2020-7565,

• Small space of random values - CVE-2020-7566,

• Missing encryption of sensitive data - CVE-2020-7567, and

• Exposure of sensitive data to an unauthorized actor - CVE-2020-7568

NOTE: The Trustwave report contains proof-of-concept code.

 

Schneider published an advisory describing an improper access control vulnerability in their Easergy T300 remote terminal unit. The vulnerability was reported by Evgeniy Druzhinin and Ilya Karpov of Rostelecom-Solar. Schneider 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.

Schneider published an advisory discussing the Drovorub malware and its impact on their Q Data Radio and J Data Radio devices. Schneider is providing generic workarounds pending further work on mitigating the vulnerabilities.

Thales Advisory

Thales Group published an advisory for their Sentinel RMS License Manager. The advisory is only available to registered customers. We should expect to see various vendors incorporating the fix for this in their affected products.

Schneider Updates

Schneider published an update for their Ripple20 advisory. The new information includes adding mitigation measures for:

• eIFE Ethernet Interface for MasterPact MTZ drawout circuit breakers,

• IFE Ethernet Interface for ComPact, PowerPact, and MasterPact circuit breakers, and

• IFE Gateway

 

Schneider published an update for their EcoStruxure advisory that was originally published on May 12^th, 2020 and most recently updated on June 9^th, 2020. The new information includes adding mitigation measures for CVE-2020-7495 & CVE-2020-7497.

 

Schneider published an update for their Modicon M218/M241/M251/M258 Logic Controllers advisory that was originally published on April 14^th, 2020. The new information includes adding mitigation measures for M258.

 

Schneider published an update for their Modicon Controllers advisory that was originally published on March 20^th, 2020. The new information includes adding mitigation information for CVE-2020-7475.

 

Schneider published an update for their Modicon M580 controller advisory that was originally published on October 8^th, 2019. The new information includes adding mitigation information for CVE-2019-6848 and CVE-2019-6849.

Siemens Updates

Siemens published an update for their CodeMeter advisory. The new information includes adding SICAM 230 to the list of affected versions including mitigation measures.

Siemens published an update for their GNU/Linux advisory that was originally published in 2018 and most recently updated on October 13^th, 2020. The new information includes adding:

• CVE-2020-10769,

• CVE-2020-14314,

• CVE-2020-25211, and

• CVE-2020-25641

Carestream Update

Carestream published an update [.PDF download link] for their Bad Neighbor advisory. The new information includes lists of affected and unaffected products.

Rockwell Update

Rockwell published an update for their Urgent/11 advisory. The new information includes mitigation measures for ControlLogix 5580 and CompactLogix products.

8 Advisories Published – 8-12-20

Yesterday the CISA NCCIC-ICS published eight control system security advisories for products from Siemens (5), Tridium, Schneider, and Yokogawa. There were also 22 updates published but those will be dealt with in a later blog post.

SICAM Advisory

This advisory describes a cross-site scripting vulnerability in the Siemens  SICAM A8000 RTUs. The vulnerability was reported by Emma Good from KTH Royal Institute of Technology. Siemens has a new version that mitigates the vulnerability. There is no indication that Good has been provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that an uncharacterized attacker could remotely exploit this vulnerability to compromise the confidentiality, integrity, and availability of the web application.

Automation License Advisory

This advisory describes an improper authorization vulnerability in the Siemens Automation License Manager. The vulnerability was reported by Lasse Trolle Borup of Danish Cyber Defense. Siemens has a new version of ALM6 that mitigates the vulnerability. There is no indication that Borup 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 this vulnerability to allow an attacker to locally escalate privileges and modify files that should be protected against writing.

Desigo Advisory

This advisory describes a code injection vulnerability in the Siemens Desigo CC building management platform. This vulnerability is self-reported. Siemens has patches available that mitigate the vulnerability.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit this vulnerability to allow an attacker to gain remote code execution on the server with SYSTEM privileges.

Simatic Advisory

This advisory describes the kr00k vulnerability in the Siemens SIMATIC and SIMOTICS wi-fi services. This is a third-party vulnerability in the Broadcom Wi-Fi client devices with publicly available exploits. Siemens has provided generic workarounds pending development of updates.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to allow an attacker to read a discrete set of traffic over the air after a Wi-Fi device state change. NCCIC-ICS provides no mention of the publicly available exploits.

SCALANCE Advisory

This advisory describes a classic buffer overflow in the Siemens SCALANCE and RUGGEDCOM products. This is the Linux Point-to-Point Protocol Daemon (pppd) Vulnerability reported in March and proof-of-concept exploit code is available. 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 gain unauthenticated access to a device and cause a buffer overflow to execute custom code. NCCIC-ICS provides no mention of the publicly available exploits.

Tridium Advisory

This advisory describes a synchronous access of remote resource without timeout vulnerability in the Tridium Niagara product. The vulnerability was self-reported. Tridium has updates that mitigate the vulnerability.

NCCIC-ICS reports that a relatively low-skilled attacker on an adjacent network could exploit the vulnerability to result in a denial-of-service condition.

Schneider Advisory

This advisory describes two path traversal vulnerabilities in the Schneider APC Easy UPS On-Line. The vulnerabilities were reported by rgod via the Zero Day Initiative. Schneider has a new version that mitigates the vulnerability. There is no indication that rgod has been provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit these vulnerabilities to lead to remote code execution.

NOTE: Schneider also published six other advisories yesterday.

 

Yokogawa Advisory

This advisory describes two vulnerabilities in the Yokogawa CENTUM distributed control system. The vulnerabilities were reported by Nataliya Tlyapova, Ivan Kurnakov, and Positive Technologies. Yokogawa has patches that mitigate the vulnerabilities for products still under support. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

The two reported vulnerabilities are:

• Improper authentication - CVE-2020-5608, and

• Path traversal CVE-2020-5609

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to allow a remote unauthenticated attacker to send tampered communication packets or create/overwrite any file and run any commands.

NOTE: I briefly discussed these vulnerabilities on August 1^st.