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2 results tagged Citrix ADC
CVE-2023-4966, named Citrix Bleed, is a buffer over-read vulnerability in Citrix NetScaler ADC and Gateway that leaks memory contents, including active user session tokens, via unauthenticated HTTP requests. Stolen tokens bypass MFA because they represent already-authenticated sessions. Exploited as a zero-day by LockBit ransomware against Boeing, Comcast Xfinity, and others.
CVE-2019-19781 is a pre-authentication path traversal vulnerability in Citrix ADC (NetScaler ADC) and Citrix Gateway that allows unauthenticated attackers to execute arbitrary OS commands. Exploited at mass scale before patches were released, it was used by nation-state APT groups and ransomware operators to compromise enterprise and government VPN gateways worldwide.
