#VU81927 Buffer overflow in Citrix Netscaler ADC and Citrix NetScaler Gateway - CVE-2023-4967

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Main Vulnerability Database Vulnerabilities #VU81927

#VU81927 Buffer overflow in Citrix Netscaler ADC and Citrix NetScaler Gateway - CVE-2023-4967

Published: October 11, 2023


Vulnerability identifier: #VU81927
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2023-4967
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Citrix Netscaler ADC
Citrix NetScaler Gateway
Software vendor:
Citrix

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error. A remote non-authenticated attacker can send specially crafted data to the device, trigger memory corruption and perform a denial of service (DoS) attack.

Successful exploitation of this vulnerability requires that the appliance is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or as AAAvirtualserver.


Remediation

Install updates from vendor's website.

For FIPS releases install the following versions:

  • NetScaler ADC 13.1-FIPS version 13.1-37.164
  • NetScaler ADC 12.1-FIPS version 12.1-55.300
  • NetScaler ADC 12.1-NDcPP version 12.1-55.300


External links