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Multiple threat actor groups including Lockbit affiliates are found to be exploiting a vulnerability in Citrix NetScaler gateway appliances, government agencies have warned
Multiple threat actors, including LockBit ransomware affiliates, are actively exploiting a recently disclosed critical security flaw in Citrix NetScaler application delivery control (ADC) and Gateway appliances to obtain initial access to target environments
Patch or isolate now: Organizations in every sector run the risk of hemorrhaging data as opportunistic attacks from LockBit ransomware and others grow.
LockBit and Nation-State Groups Using Session Tokens to Access Patched DevicesWith experts warning that NetScaler ADC and Gateway devices are being exploited by nation-state and cybercrime groups, the manufacturer has again urged all users to "patch immediately as well as terminate active sessions, which attackers can otherwise use to access devices even post-patch.
LockBit and Nation-State Groups Using Session Tokens to Access Patched DevicesWith experts warning that NetScaler ADC and Gateway devices are being exploited by nation-state and cybercrime groups, the manufacturer has again urged all users to "patch immediately as well as terminate active sessions, which attackers can otherwise use to access devices even post-patch.
The Lockbit ransomware attacks use publicly available exploits for the Citrix Bleed vulnerability (CVE-2023-4966) to breach the systems of large organizations, steal data, and encrypt files. [...]