Vulnerability Details : CVE-2021-22927
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.
Products affected by CVE-2021-22927
- Citrix » Application Delivery Controller FirmwareVersions from including (>=) 12.1 and before (<) 12.1-62.27cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
- Citrix » Application Delivery Controller FirmwareVersions from including (>=) 12.1 and before (<) 12.1-55.238cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
- Citrix » Application Delivery Controller FirmwareVersions from including (>=) 11.1 and before (<) 11.1-65.22cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
- Citrix » Application Delivery Controller FirmwareVersions from including (>=) 13.0 and before (<) 13.0-82.45cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-22927
0.30%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-22927
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:N |
8.6
|
4.9
|
NIST | |
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
2.8
|
5.2
|
NIST |
CWE ids for CVE-2021-22927
-
Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.Assigned by:
- nvd@nist.gov (Primary)
- support@hackerone.com (Secondary)
References for CVE-2021-22927
-
https://support.citrix.com/article/CTX319135
Citrix Application Delivery Controller, Citrix Gateway, and Citrix SD-WAN WANOP Edition appliance Security UpdateVendor Advisory
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