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Three new security vulnerabilities have been discovered in Azure HDInsight's Apache  Hadoop ,  Kafka , and  Spark  services that could be exploited to achieve privilege escalation and a regular expression denial-of-service ( ReDoS ) condition. "The new vulnerabilities affect any authenticated user of Azure HDInsight services such as Apache Ambari and Apache Oozie," Orca security researcher Lidor Ben Shitrit  said  in a technical report shared with The Hacker News. The list of flaws is as follows - CVE-2023-36419  (CVSS score: 8.8) - Azure HDInsight Apache Oozie Workflow Scheduler XML External Entity (XXE) Injection Elevation of Privilege Vulnerability CVE-2023-38156  (CVSS score: 7.2) - Azure HDInsight Apache Ambari Java Database Connectivity (JDBC) Injection Elevation of Privilege Vulnerability Azure HDInsight Apache Oozie Regular Expression Denial-of-Service (ReDoS) Vulnerability (no CVE) The two privilege escalation flaws could be exp...

A 29-year-old Ukrainian national has been arrested in connection with running a "sophisticated cryptojacking scheme," netting them over $2 million (€1.8 million) in illicit profits. The person, described as the "mastermind" behind the operation, was apprehended in Mykolaiv, Ukraine, on January 9 by the National Police of Ukraine with support from Europol and an unnamed cloud service provider following "months of intensive collaboration." "A cloud provider approached Europol back in January 2023 with information regarding compromised cloud user accounts of theirs," Europol  said , adding it shared the intelligence with the Ukrainian authorities. The Cyber Police of Ukraine, in a separate announcement, said the suspect "infected the servers of a well-known American company with a miner virus" at least since 2021, using custom brute-force tools to infiltrate 1,500 accounts of the firm. "Using the compromised accounts, the hacker gained access to the management ...

Serverless environments, leveraging services such as AWS Lambda, offer incredible benefits in terms of scalability, efficiency, and reduced operational overhead. However, securing these environments is extremely challenging. The core of current serverless security practices often revolves around two key components: log monitoring and static analysis of code or system configuration. But here is the issue with that: 1. Logs Only Tell Part of the Story Logs can track external-facing activities, but they don't provide visibility into the internal execution of functions. For example, if an attacker injects malicious code into a serverless function that doesn't interact with external resources (e.g., external APIs or databases), traditional log-based tools will not detect this intrusion. The attacker may execute unauthorized processes, manipulate files, or escalate privileges—all without triggering log events. 2. Static Misconfiguration Detection is Incomplete Static tools that check ...

Google is warning of multiple threat actors sharing a public proof-of-concept (PoC) exploit that leverages its Calendar service to host command-and-control (C2) infrastructure. The tool, called Google Calendar RAT (GCR) , employs Google Calendar Events for C2 using a Gmail account. It was first published to GitHub in June 2023. "The script creates a 'Covert Channel' by exploiting the event descriptions in Google Calendar," according to its developer and researcher Valerio Alessandroni, who goes by the online alias MrSaighnal. "The target will connect directly to Google." The tech giant, in its eighth Threat Horizons Report [PDF], said it has not observed the use of the tool in the wild, but noted its Mandiant threat intelligence unit has detected several threat actors sharing the PoC on underground forums. "GCR, running on a compromised machine, periodically polls the Calendar event description for new commands, executes those commands on the t...

Cybersecurity researchers have disclosed multiple vulnerabilities in a third-party driver software developed by Eltima that have been "unwittingly inherited" by cloud desktop solutions like Amazon Workspaces, Accops, and NoMachine and could provide attackers a path to perform an array of malicious activities. "These vulnerabilities allow attackers to escalate privileges enabling them to disable security products, overwrite system components, corrupt the operating system, or perform malicious operations unimpeded," SentinelOne Senior Security Researcher, Kasif Dekel, said in a report shared with The Hacker News. The 27 flaws have since been addressed in Amazon Nimble Studio AMI, Amazon NICE DCV, Amazon WorkSpaces, Amazon AppStream, NoMachine, Accops HyWorks, Accops HyWorks DVM Tools, Eltima USB Network Gate, Amzetta zPortal Windows zClient, Amzetta zPortal DVM Tools, FlexiHub, and Donglify. At its core, the issues reside in a product developed by Eltima that of...