Log4j 2 is a commonly used open source third party Java logging library used in software applications and services. If exploited, this vulnerability allows adversaries to potentially take full control of the impacted system. The vulnerability is also known as Log4Shell or LogJam by security researchers. This vulnerability is designated by Mitre as CVE-2021-44228 with the highest severity rating of 10.0. In case of distributed deployment when SMB file sharing resources and/or DFS namespace servers are configured on separate servers hosted in separate sites, you need to create separate configurations associated with different Publishers in order to achieve even traffic distribution.A critical remote code execution vulnerability impacting at least Apache Log4j 2 (versions 2.0 to 2.14.1) was recently announced by Apache. The NTLM protocol might be used as a fallback in case Kerberos is not supported by legacy or not domain-joined clients. This ticket is carried by the SMB protocol and presented to the destination file sharing service, which in turn validates it with KDC too. In order to access certain resources, the client retrieves a Kerbeos ticket from the Active Directory Domain Controller, which is acting as Key Distribution Center (KDC). Kerbersos protocol is the primary authentication and authorization method for accessing file sharing resources. The vast majority of SMB implementations are tightly integrated with Windows Active Directory authentication services like Kerberos or NTLM. In the previous example, the folder named Tools has two folder targets – \FileServer1Software and \FileServer2Software. ![]()
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