Microsoft: Kubernetes clusters hacked in malware campaign via PostgreSQL

The Kinsing malware is now actively breaching Kubernetes clusters by leveraging known weaknesses in container images and misconfigured, exposed PostgreSQL containers. While these tactics aren’t novel, Microsoft’s Defender for Cloud team reports they have seen an uptick lately, indicating that Read More …

CVE-2022-41040 and CVE-2022-41082 – zero-days in MS Exchange

At the end of September, GTSC reported an attack on critical infrastructure that took place in August. During the investigation, experts found that two 0-day vulnerabilities in Microsoft Exchange Server were used in the attack. The first one, later identified Read More …

Microsoft fixes ProxyNotShell Exchange zero-days exploited in attacks

Microsoft has released security updates to address two high-severity Microsoft Exchange zero-day vulnerabilities collectively known as ProxyNotShell and exploited in the wild. Attackers have been chaining the two security flaws to deploy Chinese Chopper web shells on compromised servers for Read More …

Raspberry Robin worm part of larger ecosystem facilitating pre-ransomware activity

Microsoft has discovered recent activity indicating that the Raspberry Robin worm is part of a complex and interconnected malware ecosystem, with links to other malware families and alternate infection methods beyond its original USB drive spread. These infections lead to Read More …

BlueBleed: Microsoft customer data leak claimed to be ‘one of the largest’ in years

Microsoft has confirmed one of its own misconfigured cloud systems led to customer information being exposed to the internet, though it disputes the extent of the leak. In a revelation this week, Microsoft’s Security Response Center (MSRC) said it was Read More …

FYI: Microsoft Office 365 Message Encryption relies on insecure block cipher

Microsoft Office 365 Message Encryption claims to offer a way “to send and receive encrypted email messages between people inside and outside your organization.” And according to WithSecure, it’s not fit for purpose: the encryption method employed, known as Electronic Read More …

Microsoft Exchange server zero-day mitigation can be bypassed

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 Read More …

Analyzing attacks using the Exchange vulnerabilities CVE-2022-41040 and CVE-2022-41082

Added information about Exploit:Script/ExchgProxyRequest.A, Microsoft Defender AV’s robust detection for exploit behavior related to this threat. Microsoft also removed a section on MFA as a mitigation, which was included in a prior version of this blog as standard guidance. Microsoft Read More …

Customer Guidance for Reported Zero-day Vulnerabilities in Microsoft Exchange Server

Microsoft is investigating two reported zero-day vulnerabilities affecting Microsoft Exchange Server 2013, Exchange Server 2016, and Exchange Server 2019. The first one, identified as CVE-2022-41040, is a Server-Side Request Forgery (SSRF) vulnerability, and the second one, identified as CVE-2022-41082, allows Read More …