NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2024-5491 and CVE-2024-5492
Security Bulletin | Severity: High | Created: 09 Jul 2024 | Modified: 09 Jul 2024 | Status: Final
Applicable Products
- NetScaler Gateway
- NetScaler
Description of Problem
Two vulnerabilities have been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway). Refer to below for further details:
Affected Versions
The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities:
- NetScaler ADC and NetScaler Gateway 14.1 before 14.1-25.53
- NetScaler ADC and NetScaler Gateway 13.1 before 13.1-53.17
- NetScaler ADC and NetScaler Gateway 13.0 before 13.0-92.31
- NetScaler ADC 13.1-FIPS before 13.1-37.183
- NetScaler ADC 12.1-FIPS before 12.1-55.304
- NetScaler ADC 12.1-NDcPP before 12.1-55.304
Note: NetScaler ADC and NetScaler Gateway version 12.1 is now End Of Life (EOL) and is vulnerable. Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities.
This bulletin only applies to customer-managed NetScaler ADC and NetScaler Gateway. Customers using Citrix-managed cloud services or Citrix-managed Adaptive Authentication do not need to take any action.
Summary
NetScaler ADC and NetScaler Gateway contain the vulnerabilities mentioned below
| CVE ID | Description | Pre-requisites | CWE | CVSS |
| CVE-2024-5491 | Denial of Service | ADC or Gateway appliance configured with SNMP (NSIP/SNIP) | CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer | CVSS v4.0 Base Score: 7.1(CVSS:4.0/AV:A/AC:L/AT:NÅR:N/UI:N/VCH:N/VI:L/VA:H/SC:N/S:N/S:N) |
| CVE-2024-5492 | Open redirect vulnerability allows a remote unauthenticated attacker to redirect users to arbitrary websites | Requires targeted user to access an attacker-controlled URL while being on a network with access to NSIP | CWE-601: URL Redirection to Untrusted Site (‹Open Redirect›) | CVSS v4.0 Base Score: 5.1 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N) |
What Customers Should Do
Cloud Software Group strongly urges affected customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions as soon as possible.
- NetScaler ADC and NetScaler Gateway 14.1-25.53 and later releases
- NetScaler ADC and NetScaler Gateway 13.1-53.17 and later releases of 13.1
- NetScaler ADC and NetScaler Gateway 13.0-92.31 and later releases of 13.0
- NetScaler ADC 13.1-FIPS 13.1-37.183 and later releases of 13.1-FIPS
- NetScaler ADC 12.1-FIPS 12.1-55.304 and later releases of 12.1-FIPS
- NetScaler ADC 12.1-NDcPP 12.1-55.304 and later releases of 12.1-NDcPP
Note: NetScaler ADC and NetScaler Gateway version 12.1 is now End Of Life (EOL). Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities.