Security News

Over 45,000 VMware ESXi servers inventoried by Lansweeper just reached end-of-life, with VMware no longer providing software and security updates unless companies purchase an extended support contract. As of October 15, 2022, VMware ESXi 6.5 and VMware ESXi 6.7 reached end-of-life and will only receive technical support but no security updates, putting the software at risk of vulnerabilities.

Almost 900 servers have been hacked using a critical Zimbra Collaboration Suite vulnerability, which at the time was a zero-day without a patch for nearly 1.5 months. The vulnerability tracked as CVE-2022-41352 is a remote code execution flaw that allows attackers to send an email with a malicious archive attachment that plants a web shell in the ZCS server while, at the same time, bypassing antivirus checks.

Web infrastructure and security company Cloudflare disclosed this week that it halted a 2.5 Tbps distributed denial-of-service attack launched by a Mirai botnet. Characterizing it as a "Multi-vector attack consisting of UDP and TCP floods," researcher Omer Yoachimik said the DDoS attack targeted the Minecraft server Wynncraft in Q3 2022.

Wynncraft, one of the largest Minecraft servers, was recently hit by a 2.5 Tbps distributed denial-of-service attack. It was a multi-vector attack that lasted for about two minutes and consisted of UDP and TCP floods packets attempting to overwhelm the server and keep out hundreds of thousands of players, DDoS mitigation company Cloudflare says.

Microsoft's Patch Tuesday update for the month of October has addressed a total of 85 security vulnerabilities, including fixes for an actively exploited zero-day flaw in the wild. Of the 85 bugs,...

VMware informed customers today that vCenter Server 8.0 is still waiting for a patch to address a high-severity privilege escalation vulnerability disclosed in November 2021. VMware says this flaw can only be exploited by attackers using a vector network adjacent to the targeted server as part of high-complexity attacks requiring low privileges and no user interaction.

Lockbit ransomware affiliates are encrypting victims via Microsoft Exchange servers hacked using exploits targeting unpatched vulnerabilities. In at least one such incident from July 2022, the attackers used a previously deployed web shell on a compromised Exchange server to escalate privileges to Active Directory admin, steal roughly 1.3 TB of data, and encrypt network systems.

Microsoft on Friday disclosed it has made more improvements to the mitigation method offered as a means to prevent exploitation attempts against the newly disclosed unpatched security flaws in Exchange Server. To that end, the tech giant has revised the blocking rule in IIS Manager from ".

Security researchers have found a new piece of malware targeting Microsoft SQL servers. Named Maggie, the backdoor has already infected hundreds of machines all over the world.

Microsoft has shared mitigations for two new Microsoft Exchange zero-day vulnerabilities tracked as CVE-2022-41040 and CVE-2022-41082, but researchers warn that the mitigation for on-premise servers is far from enough. Threat actors are already chaining both of these zero-day bugs in active attacks to breach Microsoft Exchange servers and achieve remote code execution.