CVE-2021-22956
Citrix ADC Uncontrolled Resource Consumption Denial of Service
Description
An uncontrolled resource consumption vulnerability exists in Citrix ADC <13.0-83.27, <12.1-63.22 and 11.1-65.23 that could allow an attacker with access to NSIP or SNIP with management interface access to cause a temporary disruption of the Management GUI, Nitro API, and RPC communication.
INFO
Published Date :
Dec. 7, 2021, 2:15 p.m.
Last Modified :
Dec. 8, 2021, 7:01 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2021-22956
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-22956.
| URL | Resource |
|---|---|
| https://support.citrix.com/article/CTX330728 | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-22956 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-22956 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Dec. 08, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://support.citrix.com/article/CTX330728 No Types Assigned https://support.citrix.com/article/CTX330728 Vendor Advisory Added CWE NIST CWE-400 Added CPE Configuration AND OR *cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.1-65.23 *cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* versions from (including) 12.1 up to (excluding) 12.1-63.22 *cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* versions from (including) 13.0 up to (excluding) 13.0-83.27 OR cpe:2.3:h:citrix:application_delivery_controller:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:* versions up to (excluding) 11.1-65.23 *cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:* versions from (including) 12.1 up to (excluding) 12.1-63.22 *cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:* versions from (including) 13.0 up to (excluding) 13.0-65.23 Added CPE Configuration OR *cpe:2.3:a:citrix:sd-wan:*:*:*:*:wanop:*:*:* versions up to (excluding) 10.2.9c *cpe:2.3:a:citrix:sd-wan:*:*:*:*:wanop:*:*:* versions from (including) 11.4.0 up to (excluding) 11.4.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-22956 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-22956
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.01%
score
0.42984
percentile