bleed

Preventing the Citrix Bleed Vulnerability Using Darktrace’s ActiveAI Security Platform | Darktrace Blog

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Preventing the Citrix Bleed Vulnerability Using Darktrace’s ActiveAI Security Platform | Darktrace Blog

Darktrace investigated the exploitation of the Citrix Bleed vulnerability on a customer network in late 2023. Citrix Bleed, also known as CVE-2023-4966, is a critical vulnerability that allows threat actors to hijack user sessions, bypassing authentication requirements. Darktrace’s AI detected post-exploitation activity related to Citrix Bleed and alerted the customer’s security team. The vulnerability impacts … Read more

Citrix Bleed Exploit Allows Hackers to Take Over NetScaler Accounts

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Citrix Bleed Exploit Allows Hackers to Take Over NetScaler Accounts

A proof-of-concept exploit for the ‘Citrix Bleed’ vulnerability, CVE-2023-4966, allows attackers to retrieve authentication session cookies from vulnerable Citrix NetScaler ADC and Gateway devices. Citrix patched the flaw on October 10 but did not provide many details about it. Mandiant revealed that the flaw was exploited in limited attacks as zero day at the end … Read more

Citrix introduces new measures to combat Citrix Bleed

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Citrix introduces new measures to combat Citrix Bleed

Citrix has provided additional measures for administrators patching NetScaler devices against the CVE-2023-4966 vulnerability. They are now urging administrators to log out all users and end all active sessions after applying the patch. It is essential for users of the affected builds listed in the security bulletin to update immediately to the latest versions. Mandiant … Read more

Citrix takes steps to address Citrix Bleed by implementing extra measures

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Citrix introduces new measures to combat Citrix Bleed

Citrix has provided additional measures for administrators addressing the Citrix Bleed vulnerability, urging them to log users out of NetScaler after patching against CVE-2023-4966. The company advises dropping all active user sessions and ending persistent ones. It also recommends updating to the latest versions of affected builds and deleting active or persistent sessions using specific … Read more

Breaking In with LockBit Ransomware by Exploiting Critical Citrix Bleed Vulnerability

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Breaking In with LockBit Ransomware by Exploiting Critical Citrix Bleed Vulnerability

Multiple threat actors, including LockBit ransomware affiliates, are actively exploiting a critical security flaw in Citrix NetScaler ADC and Gateway appliances. The vulnerability, known as Citrix Bleed (CVE-2023-4966), allows attackers to bypass password requirements and MFA, gaining access to user sessions and elevated permissions. Despite Citrix addressing the issue, it became a zero-day exploit as … Read more

Computer Weekly: CISA Exposes LockBit’s Method of Hacking Boeing through Citrix Bleed

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Computer Weekly: CISA Exposes LockBit’s Method of Hacking Boeing through Citrix Bleed

The US Cybersecurity and Infrastructure Security Agency (CISA), along with the FBI and the Australian Cyber Security Center (ACSC), have released detailed information on how the LockBit ransomware gang exploited the Citrix Bleed vulnerability to access Boeing’s systems. This vulnerability, known as CVE-2023-4966, affects Citrix NetScaler web applications and has been used by nation state … Read more

Boeing Reveals Ransomware Tactics in Response to Increasing Citrix Bleed Attacks

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Boeing Reveals Ransomware Tactics in Response to Increasing Citrix Bleed Attacks

Aerospace company Boeing recently experienced a ransomware attack and has shared details with the cybersecurity agency CISA. This move is seen as historic for a company of Boeing’s size. The advisory, published on November 22, includes tactics, techniques, and procedures provided by the FBI and other agencies. CISA director Jen Easterly praised Boeing for its … Read more

Hospital outages prompt HHS warning about ‘Citrix Bleed’ attacks

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Hospital outages prompt HHS warning about ‘Citrix Bleed’ attacks

The U.S. Department of Health and Human Services has issued a warning to hospitals and healthcare facilities regarding a vulnerability known as “Citrix Bleed” that is being exploited by ransomware gangs. This vulnerability, tracked as CVE-2023-4966, affects Citrix NetScaler ADC and NetScaler Gateway appliances used by enterprises for managing network traffic. Several companies, including Toyota … Read more

Understanding Citrix Bleed: The Critical Ransomware Patch You Must Install

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Understanding Citrix Bleed: The Critical Ransomware Patch You Must Install

A software vulnerability called Citrix Bleed is being increasingly associated with cyber attacks, posing risks to government and critical infrastructure. The good news is that a patch is available to address this issue. This vulnerability has been mentioned in reports across various sectors, with concerns raised in the credit union and healthcare industries. Ransomware attacks, … Read more

Millions of Xfinity customer data compromised by hackers exploiting Citrix Bleed vulnerability

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Millions of Xfinity customer data compromised by hackers exploiting Citrix Bleed vulnerability

Comcast’s Xfinity cable unit faced a cybersecurity breach due to the Citrix Bleed vulnerability, affecting approximately 36 million customers. Hackers accessed customer information by exploiting the vulnerability, resulting in a data breach. The breach impacted Xfinity systems for a few days in mid-October, with hackers gaining access to customer usernames, passwords, and personal details like … Read more