CVE-2023-4967

Denial of service

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

Denial of Service in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA Virtual Server

Denegación de Servicio (DoS) en NetScaler ADC y NetScaler Gateway cuando se configura como Gateway (servidor virtual VPN, proxy ICA, CVPN, proxy RDP) o Servidor Virtual AAA

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-09-14 CVE Reserved
2023-10-27 CVE Published
2025-02-27 CVE Updated
2025-04-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.citrix.com/article/CTX579459	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Citrix Search vendor "Citrix"		Netscaler Application Delivery Controller Search vendor "Citrix" for product "Netscaler Application Delivery Controller"				>= 13.0 < 13.0-92.19 Search vendor "Citrix" for product "Netscaler Application Delivery Controller" and version " >= 13.0 < 13.0-92.19"		-		Affected
Citrix Search vendor "Citrix"		Netscaler Application Delivery Controller Search vendor "Citrix" for product "Netscaler Application Delivery Controller"				>= 13.1 < 13.1-49.15 Search vendor "Citrix" for product "Netscaler Application Delivery Controller" and version " >= 13.1 < 13.1-49.15"		-		Affected
Citrix Search vendor "Citrix"		Netscaler Application Delivery Controller Search vendor "Citrix" for product "Netscaler Application Delivery Controller"				>= 14.1 < 14.1-8.50 Search vendor "Citrix" for product "Netscaler Application Delivery Controller" and version " >= 14.1 < 14.1-8.50"		-		Affected
Citrix Search vendor "Citrix"		Netscaler Gateway Search vendor "Citrix" for product "Netscaler Gateway"				>= 13.0 < 13.0-92.19 Search vendor "Citrix" for product "Netscaler Gateway" and version " >= 13.0 < 13.0-92.19"		-		Affected
Citrix Search vendor "Citrix"		Netscaler Gateway Search vendor "Citrix" for product "Netscaler Gateway"				>= 13.1 < 13.1-49.15 Search vendor "Citrix" for product "Netscaler Gateway" and version " >= 13.1 < 13.1-49.15"		-		Affected
Citrix Search vendor "Citrix"		Netscaler Gateway Search vendor "Citrix" for product "Netscaler Gateway"				>= 14.1 < 14.1-8.50 Search vendor "Citrix" for product "Netscaler Gateway" and version " >= 14.1 < 14.1-8.50"		-		Affected
Citrix Search vendor "Citrix"		Netscaler Application Delivery Controller Search vendor "Citrix" for product "Netscaler Application Delivery Controller"				>= 12.1 <= 12.1-55.300 Search vendor "Citrix" for product "Netscaler Application Delivery Controller" and version " >= 12.1 <= 12.1-55.300"		fips		Affected
Citrix Search vendor "Citrix"		Netscaler Application Delivery Controller Search vendor "Citrix" for product "Netscaler Application Delivery Controller"				>= 12.1 <= 12.1-55.300 Search vendor "Citrix" for product "Netscaler Application Delivery Controller" and version " >= 12.1 <= 12.1-55.300"		ndcpp		Affected
Citrix Search vendor "Citrix"		Netscaler Application Delivery Controller Search vendor "Citrix" for product "Netscaler Application Delivery Controller"				>= 13.1 <= 13.1-37.164 Search vendor "Citrix" for product "Netscaler Application Delivery Controller" and version " >= 13.1 <= 13.1-37.164"		fips		Affected