In an unprecedented action, the FBI is removing web shells from on-premises Microsoft Exchange servers at organizations in at least eight states that were infected in a wave of attacks earlier this year. Security experts offer an analysis of the bold move that the FBI took without notifying the organizations.
Microsoft issued patches for its on-premises Exchange Server software, addressing four new critical vulnerabilities discovered by the National Security Agency. A zero-day vulnerability in Desktop Window Manager was also disclosed and patched.
Forescout Research Labs and the Israeli security firm JSOF have found nine Domain Name System vulnerabilities affecting four TCP/IP stacks that, if exploited, could lead to remote code execution or denial-of-service attacks - potentially on millions of devices.
The gang behind ransomware dubbed "Cring," which has waged a series of attacks this year, is exploiting a Fortinet VPN server vulnerability that the company patched in 2019, according to a report from the security firm Kaspersky that analyzes one attack in Europe.
Researchers have uncovered nine critical vulnerabilities in Rockwell Automation's FactoryTalk AssetCentre product, which, if exploited, potentially could enable attackers to control an OT network. An updated version of the product mitigates the flaws.
Attackers are targeting unpatched SAP applications, and the exploits could lead to the hijacking of the vulnerable systems, data theft and ransomware attacks, SAP and Onapsis Research Labs report. They note that patches for most of the flaws have been available for several years.
Although SolarWinds has released a second round of patches for flaws in its Orion network monitoring platform that was targeted in a supply chain attack, some security experts say organizations need to go far beyond patching to manage the risks involved.
The zero-day attacks against Accellion's File Transfer Appliance show that a number of big-name firms continued to use the legacy technology - even though more secure, cloud-based options were available. Evidently, many CISOs didn't see a compelling reason to move on. Of course, now they do.
An attacker added a backdoor to the source code for PHP, an open-source, server-side scripting language used by more than 75% of the world's websites. Core PHP project members say the backdoor was quickly removed.
Criminals continue to target on-premises Microsoft Exchange servers that have not yet been updated with four critical patches, including for a ProxyLogon flaw, which is now being targeted by Black Kingdom ransomware. One expert describes the attack code as being "rudimentary and amateurish" but still a threat.
The Accellion File Transfer Appliance data breach continues to cause anguish. The energy company Shell has disclosed that it has been affected. Meanwhile, some customers of a Michigan-based bank have been informed that personally identifiable data has been exposed via the FTA breach.