CVE-2021-22955
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A unauthenticated denial of service vulnerability exists in Citrix ADC <13.0-83.27, <12.1-63.22 and 11.1-65.23 when configured as a VPN (Gateway) or AAA virtual server could allow an attacker to cause a temporary disruption of the Management GUI, Nitro API, and RPC communication.
Se presenta una vulnerabilidad de denegación de servicio no autenticada en Citrix ADC versiones anteriores a 13.0-83.27, versiones anteriores a 12.1-63.22 y 11.1-65.23 que, cuando es configurado como servidor virtual VPN (Gateway) o AAA, podría permitir a un atacante causar una interrupción temporal de la GUI de administración, la API Nitro y la comunicación RPC
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-01-06 CVE Reserved
- 2021-12-07 CVE Published
- 2024-08-03 CVE Updated
- 2024-08-22 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-400: Uncontrolled Resource Consumption
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://support.citrix.com/article/CTX330728 | 2021-12-08 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Citrix Search vendor "Citrix" | Application Delivery Controller Firmware Search vendor "Citrix" for product "Application Delivery Controller Firmware" | <= 11.1-65.23 Search vendor "Citrix" for product "Application Delivery Controller Firmware" and version " <= 11.1-65.23" | - |
Affected
| in | Citrix Search vendor "Citrix" | Application Delivery Controller Search vendor "Citrix" for product "Application Delivery Controller" | - | - |
Safe
|
| Citrix Search vendor "Citrix" | Application Delivery Controller Firmware Search vendor "Citrix" for product "Application Delivery Controller Firmware" | >= 12.1 < 12.1-63.22 Search vendor "Citrix" for product "Application Delivery Controller Firmware" and version " >= 12.1 < 12.1-63.22" | - |
Affected
| in | Citrix Search vendor "Citrix" | Application Delivery Controller Search vendor "Citrix" for product "Application Delivery Controller" | - | - |
Safe
|
| Citrix Search vendor "Citrix" | Application Delivery Controller Firmware Search vendor "Citrix" for product "Application Delivery Controller Firmware" | >= 13.0 < 13.0-83.27 Search vendor "Citrix" for product "Application Delivery Controller Firmware" and version " >= 13.0 < 13.0-83.27" | - |
Affected
| in | Citrix Search vendor "Citrix" | Application Delivery Controller Search vendor "Citrix" for product "Application Delivery Controller" | - | - |
Safe
|
| Citrix Search vendor "Citrix" | Gateway Search vendor "Citrix" for product "Gateway" | < 11.1-65.23 Search vendor "Citrix" for product "Gateway" and version " < 11.1-65.23" | - |
Affected
| ||||||
| Citrix Search vendor "Citrix" | Gateway Search vendor "Citrix" for product "Gateway" | >= 12.1 < 12.1-63.22 Search vendor "Citrix" for product "Gateway" and version " >= 12.1 < 12.1-63.22" | - |
Affected
| ||||||
| Citrix Search vendor "Citrix" | Gateway Search vendor "Citrix" for product "Gateway" | >= 13.0 < 13.0-83.27 Search vendor "Citrix" for product "Gateway" and version " >= 13.0 < 13.0-83.27" | - |
Affected
| ||||||