November 22, 2023 at 07:12AM Authorities in Australia, the US, and tech company Citrix have issued warnings about a critical vulnerability in the NetScaler product. Dubbed CitrixBleed, the bug allows information disclosure and affects Netscaler ADC and Gateway appliances configured as a gateway or AAA server. The flaw, which has been exploited since August and … Read more
November 21, 2023 at 11:29AM This joint Cybersecurity Advisory (CSA) aims to provide network defenders with information about the LockBit 3.0 ransomware and its exploitation of the CVE-2023-4966 vulnerability affecting Citrix NetScaler web application delivery control (ADC) and NetScaler Gateway appliances. The CSA includes tactics, techniques, and indicators of compromise (IOCs) obtained from various organizations, … Read more
November 1, 2023 at 02:49PM Threat actors are targeting government, technical, and legal organizations globally by exploiting the ‘Citrix Bleed’ vulnerability (CVE-2023-4966) in Citrix NetScaler ADC and Gateway appliances. The attacks have been ongoing since August 2023 and involve credential theft and lateral movement. The attacks are difficult to detect due to limited forensic evidence. … Read more
October 25, 2023 at 11:30AM A proof-of-concept exploit has been released for the ‘Citrix Bleed’ vulnerability (CVE-2023-4966) allowing attackers to retrieve authentication session cookies from vulnerable Citrix NetScaler ADC and NetScaler Gateway appliances. The vulnerability was previously abused as a zero-day in limited attacks and Citrix has urged administrators to patch the flaw immediately. The … Read more
October 23, 2023 at 02:22PM Citrix warns admins to immediately secure NetScaler ADC and Gateway appliances against ongoing attacks exploiting the CVE-2023-4966 vulnerability. The vulnerability allows unauthenticated attackers to remotely exploit systems without user interaction. Mandiant reported that threat actors have been using this zero-day vulnerability to steal authentication sessions and hijack accounts since late … Read more
October 18, 2023 at 02:52PM There is an active attack targeting a critical security vulnerability in Citrix NetScaler that was patched last week. The vulnerability allows cyber attackers to hijack authenticated sessions, potentially bypassing multifactor authentication. While the patch helps mitigate the issue, organizations are advised to terminate all active sessions to fully remediate the … Read more
October 18, 2023 at 09:15AM Citrix has issued a warning about a critical security flaw in its NetScaler ADC and Gateway appliances, known as CVE-2023-4966. The vulnerability could expose sensitive information and requires devices to be configured as a Gateway or AAA virtual server for exploitation to occur. Patches were released on October 10, 2023, … Read more
October 18, 2023 at 08:02AM A critical vulnerability, known as CVE-2023-4966, in Citrix NetScaler ADC/Gateway devices has been actively exploited as a zero-day since late August. The issue allows attackers to access secrets in gateways configured as authentication, authorization, and accounting (AAA) virtual servers. Citrix has released a fix and urges customers to install the … Read more