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Exploitation attempts targeting a remote code execution flaw in Citrix’s ShareFile product have spiked just as the US Cybersecurity and Infrastructure Security Agency (CISA) added it to its Known Exploited Vulnerabilities Catalog.  The vulnerability affecting the ShareFile file sharing and collaboration product is tracked as CVE-2023-24489 and it has been assigned a ‘critical’ severity rating. It can allow an unauthenticated attacker to upload arbitrary files and possibly achieve remote code execution. When details of the…

A threat actor has automated the exploitation of a recent Citrix vulnerability and has infected roughly 2,000 NetScaler instances with a backdoor, British information assurance firm NCC Group reports. Tracked as CVE-2023-3519, the critical vulnerability was disclosed last month as a zero-day, being exploited since June 2023, including in attacks against critical infrastructure organizations. The issue allows unauthenticated, remote attackers to execute arbitrary code on vulnerable Citrix Application Delivery Controller (ADC) and Gateway appliances that…

White House officials concerned by AI chatbots’ potential for societal harm and the Silicon Valley powerhouses rushing them to market are heavily invested in a three-day competition ending Sunday at the DefCon hacker convention in Las Vegas. Some 2,200 competitors tapped on laptops seeking to expose flaws in eight leading large-language models representative of technology’s next big thing. But don’t expect quick results from this first-ever independent “red-teaming” of multiple models. Findings won’t be made…

SecurityWeek is publishing a weekly cybersecurity roundup that provides a concise compilation of noteworthy stories that might have slipped under the radar. We provide a valuable summary of stories that may not warrant an entire article, but are nonetheless important for a comprehensive understanding of the cybersecurity landscape. Each week, we will curate and present a collection of noteworthy developments, ranging from the latest vulnerability discoveries and emerging attack techniques to significant policy changes and…