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Home Alerts

New Citrix Flaw Exposes Sensitive Data

May 7, 2024
Reading Time: 3 mins read
in Alerts
New Citrix Flaw Exposes Sensitive Data

A significant security vulnerability has been identified in Citrix NetScaler ADC and Gateway appliances, potentially allowing unauthorized access to sensitive data. The vulnerability, known as an out-of-bounds memory read issue, has been found in software versions up to 13.1-50.23 and bears similarities to the previously reported CitrixBleed. However, it is considered less severe regarding the sensitivity of the data exposed. This flaw specifically affects configurations commonly used in enterprise environments for secure remote access and traffic management.

The issue was brought to light by security experts at Bishop Fox, who determined that the flaw enables remote attackers to exploit the system by sending specially crafted requests to the vulnerable interface. Through this method, attackers could potentially access and leak information like credentials and session tokens found in HTTP request bodies. The vulnerability results from improper handling of the HTTP Host request header by the software’s web interface, which fails to manage memory correctly when dealing with overly long header values.

Upon discovering the vulnerability, Citrix acknowledged the issue and has since released updates to address this critical security flaw. The updates, starting from version 13.1-51.15, include fixes designed to mitigate the vulnerability and prevent further exploitation. Citrix has strongly advised all users of the affected versions to update their systems promptly to avoid potential exploitation, as active exploits of this vulnerability have been observed in the wild.

This incident highlights the continuous challenges faced in securing network appliances against sophisticated cyber threats. It underscores the importance for organizations to routinely review and update their systems, especially those utilizing older software versions that may be end-of-life. Upgrading to supported versions is crucial not only to address specific vulnerabilities but also to ensure overall system security and compliance with current standards, thereby safeguarding networks against potential data breaches and unauthorized access.

Reference:
  • Critical Security Flaw in Citrix NetScaler Risks Data Leaks

Tags: Citrix NetScaler ADCCitrixBleedCyber AlertCyber Alerts 2024Cyber RiskCyber threatGatewayMay 2024
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