// For flags

CVE-2020-13998

 

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

Citrix XenApp 6.5, when 2FA is enabled, allows a remote unauthenticated attacker to ascertain whether a user exists on the server, because the 2FA error page only occurs after a valid username is entered. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

** VERSIÓN NO COMPATIBLE CUANDO SE ASIGNÓ ** Citrix XenApp versión 6.5, cuando 2FA está habilitado, permite a un atacante remoto no autenticado determinar si existe un usuario en el servidor, porque la página de error 2FA solo se produce después de ingresar un nombre de usuario válido. NOTA: Esta vulnerabilidad sólo afecta a los productos que ya no son apoyados por el mantenedor

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2020-06-09 CVE Reserved
  • 2020-06-11 CVE Published
  • 2023-06-14 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-203: Observable Discrepancy
  • CWE-639: Authorization Bypass Through User-Controlled Key
CAPEC
References (1)
URL Tag Source
https://gist.github.com/kampji/11e259d68ad98a6f0f898132f1961a96 Third Party Advisory
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Citrix
Search vendor "Citrix"
 Xenapp
Search vendor "Citrix" for product "Xenapp"
 6.5.0.0
Search vendor "Citrix" for product "Xenapp" and version "6.5.0.0"
-
Affected