CVE-2021-22955
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Citrix Gateway
PublishedDec 7, 2021
First seenDec 7, 2021
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- citrix gateway11.1-65.23, 12.1-63.22, 13.0-83.27 or later
- citrix application_delivery_controller_firmware12.1-63.22, 13.0-83.27 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| citrix gateway | v < 11.1-65.23, 12.1 ≤ v < 12.1-63.22, 13.0 ≤ v < 13.0-83.27 | 11.1-65.23, 12.1-63.22, 13.0-83.27 |
| citrix application_delivery_controller_firmware | v ≤ 11.1-65.23, 12.1 ≤ v < 12.1-63.22, 13.0 ≤ v < 13.0-83.27 | 12.1-63.22, 13.0-83.27 |
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