7.5
HIGH
CVE-2021-22919
Citrix ADC/Gateway/SD-WAN: Disk Space Consumption Vulnerability
Description

A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN WANOP Edition models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities, if exploited, could lead to the limited available disk space on the appliances being fully consumed.

INFO

Published Date :

Aug. 5, 2021, 9:15 p.m.

Last Modified :

Aug. 16, 2021, 4:54 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-22919 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.

ID Vendor Product Action
1 Citrix gateway
2 Citrix netscaler_gateway
3 Citrix application_delivery_controller_firmware
4 Citrix sd-wan_wanop
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-2021-22919.

URL Resource
https://support.citrix.com/article/CTX319135 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-2021-22919 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-22919 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]

    Aug. 16, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/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/CTX319135 No Types Assigned https://support.citrix.com/article/CTX319135 Vendor Advisory
    Added CWE NIST CWE-770
    Added CPE Configuration AND OR *cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* versions from (including) 11.1 up to (excluding) 11.1-65.22 *cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* versions from (including) 12.1 up to (excluding) 12.1-62.27 *cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* versions from (including) 13.0 up to (excluding) 13.0-82.45 OR cpe:2.3:h:citrix:application_delivery_controller:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* versions from (including) 12.1 up to (excluding) 12.1-55.238 OR cpe:2.3:h:citrix:mpx\/sdx_14030_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx\/sdx_14060_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx\/sdx_14080_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx_15030-50g_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx_15040-50g_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx_15060-50g_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx_15080-50g_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx_15100-50g_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx_15120-50g_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx_8905_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx_8910_fips:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:mpx_8920_fips:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:* versions from (including) 12.1 up to (excluding) 12.1-62.27 *cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:* versions from (including) 13.0 up to (excluding) 13.0-82.45 *cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* versions from (including) 11.1 up to (excluding) 11.1-65.22
    Added CPE Configuration AND OR *cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:* versions from (including) 10.2 up to (excluding) 10.2.9.b *cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:* versions from (including) 11.2 up to (excluding) 11.2.3.b *cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:* versions from (including) 11.3 up to (excluding) 11.3.2.a *cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:* versions from (including) 11.4 up to (excluding) 11.4.0.a OR cpe:2.3:h:citrix:4000-wo:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:4100-wo:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:5000-wo:-:*:*:*:*:*:*:* cpe:2.3:h:citrix:5100-wo:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-22919 is associated with the following CWEs:

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

0.41738

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability