Security News
The digital security team at the U.K. National Health Service has raised the alarm on active exploitation of Log4Shell vulnerabilities in unpatched VMware Horizon servers by an unknown threat actor to drop malicious web shells and establish persistence on affected networks for follow-on attacks. "The attack likely consists of a reconnaissance phase, where the attacker uses the Java Naming and Directory InterfaceTM via Log4Shell payloads to call back to malicious infrastructure," the non-departmental public body said in an alert.
UK's National Health Service has published a cyber alert warning of an unknown threat group targeting VMware Horizon deployments with Log4Shell exploits. According to the NHS notice, the actor is leveraging the exploit to achieve remote code execution on vulnerable VMware Horizon deployments on public infrastructure.
VMWare has shipped updates to Workstation, Fusion, and ESXi products to address an "Important" security vulnerability that could be weaponized by a threat actor to take control of affected systems. The company credited Jaanus Kääp, a security researcher with Clarified Security, for reporting the flaw.
A security vulnerability in VMware's Cloud Foundation, ESXi, Fusion and Workstation platforms could pave the way for hypervisor takeover in virtual environments - and a patch is still pending for some users. ESXi is a bare-metal hypervisor that installs on a server and partitions it into multiple virtual machines.
VMware has warned users a flaw in its VMware Verify two-factor authentication product could allow a malicious actor with a first-factor authentication credential to obtain a second factor from its VMware Verify product. CVE-2021-22057 is the rascal behind this issue and is rated 6.6/10. VMware Verify is part of the wider VMware Workspace ONE Access product, now available in version 21.08.0.1 to fix this bug and a 5.5-rated Server Side Request Forgery that can allow a malicious actor with network access to make HTTP requests to arbitrary origins and read the full response.
CISA has asked VMware admins and users today to patch a critical security vulnerability found in the Workspace ONE UEM console that threat actors could abuse to gain access to sensitive information. Workspace ONE Unified Endpoint Management is a VMware solution for over-the-air remote management of desktops, mobile, rugged, wearables, and IoT devices.
Conti ransomware operation is using the critical Log4Shell exploit to gain rapid access to internal VMware vCenter Server instances and encrypt virtual machines. Among the first to leverage the bug were cryptocurrency miners, botnets, and a new ransomware strain called Khonsari.
VMware customers have probably had a busy week because more than 100 of the IT giant's products are impacted by the Log4j bug. Now they need to make another urgent patching effort, because the virty giant has identified another critical flaw in its products that it rates as requiring urgent attention.
VMware has shipped updates to address two security vulnerabilities in vCenter Server and Cloud Foundation that could be abused by a remote attacker to gain access to sensitive information. The more severe of the issues concerns an arbitrary file read vulnerability in the vSphere Web Client.
Sophos has released details of a new ransomware written in Python that attackers used to compromise and encrypt virtual machines hosted on an ESXi hypervisor."This is one of the fastest ransomware attacks Sophos has ever investigated and it appeared to precision-target the ESXi platform," said Andrew Brandt, principal researcher at Sophos.