8.1
HIGH
CVE-2021-22927
Citrix ADC/Citrix Gateway Session Fixation Vulnerability
Description

A session fixation vulnerability exists in Citrix ADC and Citrix Gateway 13.0-82.45 when configured SAML service provider that could allow an attacker to hijack a session.

INFO

Published Date :

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

Last Modified :

Aug. 16, 2021, 8:14 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-22927 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
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-2021-22927.

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-2021-22927 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-22927 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 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
    Changed Reference Type https://support.citrix.com/article/CTX319135 No Types Assigned https://support.citrix.com/article/CTX319135 Vendor Advisory
    Added CWE NIST CWE-384
    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
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-2021-22927 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.

0.15 }} -0.00%

score

0.50894

percentile

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