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VULNERABILITIES

CVE-2020-13998 Details

Description

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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://gist.github.com/kampji/11e259d68ad98a6f0f898132f1961a96 CVEThird Party Advisory
https://gist.github.com/kampji/11e259d68ad98a6f0f898132f1961a96 [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-203Observable Discrepancy[email protected]
CWE-639Authorization Bypass Through User-Controlled KeyCISA-ADP

Affected Products

ProductVersions
citrix xenapp
6.5.0.0

CPE

  • cpe:2.3:a:citrix:xenapp:6.5.0.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

15 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2020-13998
NVD Published Date:
Jun 11, 2020
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]