Technical Details Note: this advisory uses the MITRE ATT&CK® for Enterprise framework, version 11. See MITRE ATT&CK for Enterprise for all referenced tactics and techniques. Zeppelin ransomware is a derivative of the Delphi-based Vega malware family and functions as a Ransomware as a Service (RaaS). From 2019 through at least June 2022, actors have used this malware to target a wide range of businesses and critical infrastructure...
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An authentication bypass Zimbra security vulnerability is actively exploited to compromise Zimbra Collaboration Suite (ZCS) email servers worldwide.According to threat intelligence firm Volexity, attackers have been abusing a ZCS remote code execution flaw tracked as CVE-2022-27925 requiring authentication with the help of an auth bypass bug (tracked as CVE-2022-37042). Description: CVE-2022-27925: Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP...
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Description:kernel/bpf/verifier.c in the Linux kernel through 5.15.14 allows local users to gain privileges because of the availability of pointer arithmetic via certain *_OR_NULL pointer types. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Impact: A local attacker may exploit this issue to gain elevated root privileges on the affected system. Mitigation: Updates...
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Microsoft has released updates to address multiple vulnerabilities in Microsoft software. An attacker can exploit some of these vulnerabilities to take control of an affected system. CVE-2022-30190, also known as “Follina” — the RCE vulnerability in the Microsoft Windows Support Diagnostic Tool that was disclosed in late May and exploited in the wild — has now received patches for affected Windows systems. While Microsoft had...
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Security researchers have discovered a new Microsoft Office zero-day vulnerability that is being used in attacks to execute maliciously PowerShell commands via Microsoft Diagnostic Tool (MSDT) simply by opening a Word document. Workarounds: In Microsoft Defender’s Attack Surface Reduction (ASR) activating the rule “Block all Office applications from creating child processes” in Block mode will prevent this from being exploited.[https://docs.microsoft.com/en-us/microsoft-365/security/defender-endpoint/attack-surface-reduction-rules-reference?view=o365-worldwide#block-all-office-applications-from-creating-child-processes] Disable the MSDT URL Protocol....
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