Cybersecurity

The Cybersecurity and Infrastructure Security Agency (CISA) has published the following ICS vulnerability advisories, as well as alerts, updates, and bulletins:

ICS Vulnerability Advisories:

CISA Releases Two Industrial Control Systems Advisories

Products are used across multiple sectors, please check these latest advisories for specific equipment used across your ICS environments and address accordingly.

Water utility giant, Veolia North America, is the latest victim of a ransomware attack adding to the recent spate of cyber attacks impacting entities across the water and wastewater systems sector. As the investigation ensues, it appears the attack was limited to the company’s internal back-end servers and affected its bill payment systems. While Veolia has stated that there is “no evidence to suggest it affected our water or wastewater treatment operations,” experts and investigators are still assessing the full extent of the attack’s impact.

The following posts are useful for general awareness of current cyber threats, vulnerabilities, guidance, and other cyber-related news or updates. These resources have been curated by the WaterISAC analyst team as items of broad relevance and benefit that do not need supplemental analysis at this time.

Critical Infrastructure

Outlook is a near ubiquitous communications application. Additionally, with so many social engineering/phishing tactics targeting users through their inboxes, vulnerabilities left unpatched often become an attractive threat vector. One of three Microsoft vulnerabilities recently disclosed by Varonis has the ability to steal hashed passwords through Outlook’s calendar invitation with just one click. This vulnerability was assigned CVE-2023-35636 and Microsoft distributed the patch on December 12, 2023.