SB2024011635 - Multiple vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway

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Main Vulnerability Database SB2024011635

SB2024011635 - Multiple vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway

Published: January 16, 2024 Updated: January 17, 2024

Security Bulletin ID SB2024011635
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Code Injection (CVE-ID: CVE-2023-6548)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:A/U:Amber


The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation within the management interface. A remote authenticated user can send a specially crafted request to the application and execute arbitrary code on the target system.

Note, the vulnerability is being actively exploited in the wild.


2) Buffer overflow (CVE-ID: CVE-2023-6549)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber


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

The vulnerability exists due to a boundary error. A remote attacker can send specially crated packets to the system, trigger memory corruption and perform a denial of service (DoS) attack.

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

Note, the vulnerability is being actively exploited in the wild.


Remediation

Install update from vendor's website.

References